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Bosch Digital Multi-Scanner GMS120
Bosch Digital Multi-Scanner GMS120
Bosch Digital Multi-Scanner GMS120
Bosch Digital Multi-Scanner GMS120
Bosch Digital Multi-Scanner GMS120
Bosch Digital Multi-Scanner GMS120
Bosch Digital Multi-Scanner GMS120
Bosch Digital Multi-Scanner GMS120
Bosch Digital Multi-Scanner GMS120
Bosch Digital Multi-Scanner GMS120

Bosch Digital Multi-Scanner GMS120

Bosch Digital Multi-Scanner GMS120
Bosch Digital Multi-Scanner GMS120
Bosch Digital Multi-Scanner GMS120
Bosch Digital Multi-Scanner GMS120
Bosch Digital Multi-Scanner GMS120
Bosch Digital Multi-Scanner GMS120
Bosch Digital Multi-Scanner GMS120
Bosch Digital Multi-Scanner GMS120
Bosch Digital Multi-Scanner GMS120
Bosch Digital Multi-Scanner GMS120
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Features

  • Detection: The Bosch GMS120 Digital Wall Scanner features multi mode laser detection for wood studs, metal objects (rebar, studs and steel/copper pipes) and live wiring
  • Performance: Features the latest 3 sensor laser technology, offering a wide range of detection performance of up to 4 3/4 Inch deep in cured concrete, up to 2 inches for live wiring, up to 3 1/8 inches for copper and up to 1 1/2 inches for wood studs; The accuracy of the product is 0.0625
  • Self calibrating: Includes 3 selection modes for wood, metal, and AC wiring; The GMS120 offers automatic calibration from the start and continues to self calibrate through the course of the project for easy and precise detection
  • Display: Features an illuminated graphical LCD display to indicate mode, detection strength, and more; The large detection ring flashes green for no object found, orange for object near and red for object found within the sensor range
  • Center Finder: This wall scanner includes a center finder that pinpoints the object center with an audible detection signal with an on/off button

Description

Know what's behind the wall before you take on that job with a wall scanner! The Bosch GMS 120 Electronic Multi Scanner finds magnetic and nonmagnetic metals, power cables, wooden substructures and even plastic pipes! An audible alert and illuminated graphical display gives you the information you need to proceed with confidence. Bosch’s GMS120 digital multi-scanner provides detection of multiple materials, including wood, metal, and live wiring. Because of its versatility and consistent performance, it’s an ideal tool for construction, electricians, contractors, carpenters, masons, plumbers, and others who need reliable detection. Deep Detection The GMS120 has a deep metal detection feature, which allows a user to detect steel that is placed up to 4-3/4-inches (120 mm) deep in cured concrete. It has a maximum detection depth of up to 2 inches for live wiring, up to 3-1/8 inches for copper, and up to 1-1/2 inches for wood studs. User-Friendly Features Bosch’s GMS120 digital multi-scanner provides an illuminated ring that indicates detection status and an audible detection signal with an on/off button. Adding to the user-focused design, its bright and readable illuminated graphical LCD display indicates mode, detection strength, and more, making it simple to check the detection device and switch modes and tasks. In addition, its ergonomic soft-grip provides a comfortable grip that’s secure and safe. Dimensions and Warranty The Bosch GMS120 digital multi-scanner measures 10-1/4 inches by 3 inches by 6-1/2 inches and weighs .6 pounds. It comes with a two-year warranty. What's in the Box One Bosch GMS120 digital multi-scanner, hand strap, one 9-volt battery, and carrying pouch. Bosch GMS 120 professional multi material cable detector, complete with protective bag. The most convenient multi-functional scanner for construction applications. Includes: hand strap, (1) 9-Volt battery and carrying case.


Manufacturer Bosch


Part Number GMS 120


Item Weight 1.1 pounds


Product Dimensions 9.84 x 5.91 x 1.97 inches


Item model number GMS 120


Batteries 1 9V batteries required. (included)


Is Discontinued By Manufacturer No


Size Pack of 1


Color Blue


Material Metal


Voltage 9 Volts


Item Package Quantity 1


Measurement System Metric


Included Components Unit^Instruction Guide


Batteries Included? Yes


Batteries Required? No


Battery Cell Type Alkaline


Warranty Description 30-day money back guarantee, 1 yr warranty


ASIN B004TACMZ8


Customer Reviews 4.1 out of 5 stars 1,074 ratings 4.1 out of 5 stars


Best Sellers Rank #10,221 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #17 in Stud Finders & Scanners


Date First Available April 5, 2011


Shipping

This product includes free shipping to all US addresses.


Delivery

Unless otherwise stated above, most products arrive within 2-3 business days. Larger items may take 6-9 business days. Tracking information will be automatically provided as soon as your order ships.


View our full shipping policy here.

Returns

This product can be returned within 30 days of delivery for a full refund. Please visit our returns center to begin a return.

View our full returns policy here.

Features

  • Detection: The Bosch GMS120 Digital Wall Scanner features multi mode laser detection for wood studs, metal objects (rebar, studs and steel/copper pipes) and live wiring
  • Performance: Features the latest 3 sensor laser technology, offering a wide range of detection performance of up to 4 3/4 Inch deep in cured concrete, up to 2 inches for live wiring, up to 3 1/8 inches for copper and up to 1 1/2 inches for wood studs; The accuracy of the product is 0.0625
  • Self calibrating: Includes 3 selection modes for wood, metal, and AC wiring; The GMS120 offers automatic calibration from the start and continues to self calibrate through the course of the project for easy and precise detection
  • Display: Features an illuminated graphical LCD display to indicate mode, detection strength, and more; The large detection ring flashes green for no object found, orange for object near and red for object found within the sensor range
  • Center Finder: This wall scanner includes a center finder that pinpoints the object center with an audible detection signal with an on/off button

Description

Know what's behind the wall before you take on that job with a wall scanner! The Bosch GMS 120 Electronic Multi Scanner finds magnetic and nonmagnetic metals, power cables, wooden substructures and even plastic pipes! An audible alert and illuminated graphical display gives you the information you need to proceed with confidence. Bosch’s GMS120 digital multi-scanner provides detection of multiple materials, including wood, metal, and live wiring. Because of its versatility and consistent performance, it’s an ideal tool for construction, electricians, contractors, carpenters, masons, plumbers, and others who need reliable detection. Deep Detection The GMS120 has a deep metal detection feature, which allows a user to detect steel that is placed up to 4-3/4-inches (120 mm) deep in cured concrete. It has a maximum detection depth of up to 2 inches for live wiring, up to 3-1/8 inches for copper, and up to 1-1/2 inches for wood studs. User-Friendly Features Bosch’s GMS120 digital multi-scanner provides an illuminated ring that indicates detection status and an audible detection signal with an on/off button. Adding to the user-focused design, its bright and readable illuminated graphical LCD display indicates mode, detection strength, and more, making it simple to check the detection device and switch modes and tasks. In addition, its ergonomic soft-grip provides a comfortable grip that’s secure and safe. Dimensions and Warranty The Bosch GMS120 digital multi-scanner measures 10-1/4 inches by 3 inches by 6-1/2 inches and weighs .6 pounds. It comes with a two-year warranty. What's in the Box One Bosch GMS120 digital multi-scanner, hand strap, one 9-volt battery, and carrying pouch. Bosch GMS 120 professional multi material cable detector, complete with protective bag. The most convenient multi-functional scanner for construction applications. Includes: hand strap, (1) 9-Volt battery and carrying case.


Manufacturer Bosch


Part Number GMS 120


Item Weight 1.1 pounds


Product Dimensions 9.84 x 5.91 x 1.97 inches


Item model number GMS 120


Batteries 1 9V batteries required. (included)


Is Discontinued By Manufacturer No


Size Pack of 1


Color Blue


Material Metal


Voltage 9 Volts


Item Package Quantity 1


Measurement System Metric


Included Components Unit^Instruction Guide


Batteries Included? Yes


Batteries Required? No


Battery Cell Type Alkaline


Warranty Description 30-day money back guarantee, 1 yr warranty


ASIN B004TACMZ8


Customer Reviews 4.1 out of 5 stars 1,074 ratings 4.1 out of 5 stars


Best Sellers Rank #10,221 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #17 in Stud Finders & Scanners


Date First Available April 5, 2011


Shipping

This product includes free shipping to all US addresses.


Delivery

Unless otherwise stated above, most products arrive within 2-3 business days. Larger items may take 6-9 business days. Tracking information will be automatically provided as soon as your order ships.


View our full shipping policy here.

Returns

This product can be returned within 30 days of delivery for a full refund. Please visit our returns center to begin a return.

View our full returns policy here.

Features

  • Detection: The Bosch GMS120 Digital Wall Scanner features multi mode laser detection for wood studs, metal objects (rebar, studs and steel/copper pipes) and live wiring
  • Performance: Features the latest 3 sensor laser technology, offering a wide range of detection performance of up to 4 3/4 Inch deep in cured concrete, up to 2 inches for live wiring, up to 3 1/8 inches for copper and up to 1 1/2 inches for wood studs; The accuracy of the product is 0.0625
  • Self calibrating: Includes 3 selection modes for wood, metal, and AC wiring; The GMS120 offers automatic calibration from the start and continues to self calibrate through the course of the project for easy and precise detection
  • Display: Features an illuminated graphical LCD display to indicate mode, detection strength, and more; The large detection ring flashes green for no object found, orange for object near and red for object found within the sensor range
  • Center Finder: This wall scanner includes a center finder that pinpoints the object center with an audible detection signal with an on/off button

Description

Know what's behind the wall before you take on that job with a wall scanner! The Bosch GMS 120 Electronic Multi Scanner finds magnetic and nonmagnetic metals, power cables, wooden substructures and even plastic pipes! An audible alert and illuminated graphical display gives you the information you need to proceed with confidence. Bosch’s GMS120 digital multi-scanner provides detection of multiple materials, including wood, metal, and live wiring. Because of its versatility and consistent performance, it’s an ideal tool for construction, electricians, contractors, carpenters, masons, plumbers, and others who need reliable detection. Deep Detection The GMS120 has a deep metal detection feature, which allows a user to detect steel that is placed up to 4-3/4-inches (120 mm) deep in cured concrete. It has a maximum detection depth of up to 2 inches for live wiring, up to 3-1/8 inches for copper, and up to 1-1/2 inches for wood studs. User-Friendly Features Bosch’s GMS120 digital multi-scanner provides an illuminated ring that indicates detection status and an audible detection signal with an on/off button. Adding to the user-focused design, its bright and readable illuminated graphical LCD display indicates mode, detection strength, and more, making it simple to check the detection device and switch modes and tasks. In addition, its ergonomic soft-grip provides a comfortable grip that’s secure and safe. Dimensions and Warranty The Bosch GMS120 digital multi-scanner measures 10-1/4 inches by 3 inches by 6-1/2 inches and weighs .6 pounds. It comes with a two-year warranty. What's in the Box One Bosch GMS120 digital multi-scanner, hand strap, one 9-volt battery, and carrying pouch. Bosch GMS 120 professional multi material cable detector, complete with protective bag. The most convenient multi-functional scanner for construction applications. Includes: hand strap, (1) 9-Volt battery and carrying case.


Manufacturer Bosch


Part Number GMS 120


Item Weight 1.1 pounds


Product Dimensions 9.84 x 5.91 x 1.97 inches


Item model number GMS 120


Batteries 1 9V batteries required. (included)


Is Discontinued By Manufacturer No


Size Pack of 1


Color Blue


Material Metal


Voltage 9 Volts


Item Package Quantity 1


Measurement System Metric


Included Components Unit^Instruction Guide


Batteries Included? Yes


Batteries Required? No


Battery Cell Type Alkaline


Warranty Description 30-day money back guarantee, 1 yr warranty


ASIN B004TACMZ8


Customer Reviews 4.1 out of 5 stars 1,074 ratings 4.1 out of 5 stars


Best Sellers Rank #10,221 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #17 in Stud Finders & Scanners


Date First Available April 5, 2011


abunda_amazon_reviews I don't like giving negative reviews, but this thing is a dog with fleas. Went through the instructions using it as directed. Set the sensor for metal. I was looking for the main water shut off valve in a house we bought 2 years ago. The genius who finished the basement drywalled over the valve, hence needing this device. I knew the approximate area where the valve was. So I decided to buy this detector to identify where the pipe and the valve were. Unfortunately, this device doesn't know the difference between wood and metal, cut to the side of the wood, made a hole big enough to put my hand through, and finally found the valve nowhere near where this device sensed metal. Just to be thorough I checked the wood and there are no nails, screws, staples, or anything metal, on the wood, behind the wood, or in front. Given my experience, I would NOT recommend this device. Now I have a 14 x 14 area to repair for something that was 6 x 6.;;Reviewed in the United States on May 21, 2018;;1.0 out of 5 stars;;Can't differentiate between wood and metal = NOT GOOD;;Actual Buyer;;;SUMMARY: Don’t buy. I tried two units and could not reliably find wood studs behind a tiled wall. I’m a handyman and occasionally need to locate wood studs behind tiled shower walls to install safety grab bars. Traditional stud finders work wonderfully on ordinary drywall surfaces. But, when you have thicker materials and other materials like cement backer board or HardiBacker with tile on top things become more challenging for the finder. I’ve been searching for a reliable unit that can find the stud and not give false readings from stuff like water pipes or electrical wires. Testing by drilling a small pilot hole in drywall is an easy and fast fix. Repairing a hole in tile (even a small pilot hole) is a huge task and could be even bigger if I hit a water pipe or electrical wire! This unit claims to be able to find wood studs, metal and electrical wires. I didn’t test the metal or electrical features. I only needed to detect wooden studs behind a tiled shower wall. It did find wood studs. But, not only did it find the studs (slowly but it did find them) but it also detected studs where none existed. If I were to depend on this to drill holes through tile to secure a grab bar I’d end up ruining a perfectly good shower wall! I’ve been using other techniques like finding the stud on the back side of the wall and measuring to the same location in the shower to verify the stud finder was correct. This Bosch GMS120 Multi-Scanner did not work for this use so I’ve returned it for a refund. While not perfect my Franklin Sensors FS710PROProSensor 710+ (available here at Amazon) is cheaper and more reliable! Not perfect but certainly better than the Bosch GSM120. Franklin Sensors FS710PROProSensor 710+ Professional Stud Finder with Built-in Bubble Level and Ruler;;Reviewed in the United States on July 4, 2018;;2.0 out of 5 stars;;Don't buy. Couldn't locate wood stud behind tiled shower wall.;;lschwarcz;;;I really expected more from such a good company. I cannot recommend this stud finder to anyone. I'll give you the list of primary issues below. But, the smaller less costly stud finders out perform this one hands down. All my testing was done on standard sheet-rock wall, wood studs, residential standard installation, clean. I would say that #2, visibility, is probably the major issue, and really should have been fixed prior to the product being manufactured and released. 1. Inconsistency - the readings were all over the place, even when I knew where the stud was. False readings were abundant and quite annoying. Detecting the sides of the stud were also inconsistent, even after doing the 3-scan for fine tuning as in the manual. 2. Visibility - the ring light is too bright and the LCD too dim; the ring light causes your pupils to constrict to the point where you can't see the LCD. If you turn on the backlight for the LCD, it only has about a 20 degree angle of good visibility, so you have to move your head up or down to where the scanner is... unless you plan to always scan at eye level... doubtful. Very annoying and unusable. 3. Overly Sensitive to AC - unfortunately, it is so sensitive to AC that it truly interferes with normal use of the scanner. You can be anywhere within a 12 inch radius of AC wiring and the scanner picks that up, which disables the stud finding capability. Again, annoying and unusable at that point.;;Reviewed in the United States on April 10, 2020;;1.0 out of 5 stars;;High Cost and Lots of Design Flaws;;Tom O;;;As far as finding a stud in my walls, this has been so so. It finds them after about 10 passes back and forth. I have used it about 12 times in my house to locate a stud for hanging a picture or mirror. I go back and forth, back and forth and it gives different readings at different times. I find I have to go VERY slowly and try to center on the stud five times before I trust I have located something. Disappointed, because 20 years ago I purchased a sonic stud finder that lasted until this year, was very inexpensive, and outperformed this one.;;Reviewed in the United States on March 13, 2018;;3.0 out of 5 stars;;Not so great - Disappointed after spending this much;;Darren B;;;I initially posted a very poor rating as the scanner appeared to be extremely sensitive giving many false positives for non ferrous metal behind walls. Turns out, the scanner was doing its job. The insulation behind the walls had reflective coating which gave rise to the many false readings. The advantage of this scanner over others like Zircon i520 is that it has a hole to make markings (zircon does not) and it does not require completely new batteries like troubleshooting fixes for Zircon.;;Reviewed in the United States on November 21, 2017;;4.0 out of 5 stars;;upped rating from poor to a good tool to have;;Charles Smith;;;I have used this a few times, and it detects so much stuff its hard to use. I have actually put it down for a $12 yellow brand item which works great. If you need to find stuff deep it may work great, for normal studs, it finds nails, wires, wood and just goes nuts. Not sure if i'll ever actually need this, as i wanted it to find floor studs for screwing down(squeaky floor). It didnt do well and if i had thought of it would have sent it back. Im sure under the right conditions, it's great, but i guess i dont know how to use it.;;Reviewed in the United States on June 26, 2018;;4.0 out of 5 stars;;I have actually put it down for a $12 yellow brand item which works great. If you need to find stuff deep it ...;;Joel R;;;I was pretty skeptical about buying this item because there were already great stud finders on the market, but I heard bosch makes great measurement devices, so I gave it a shot. My boss laughed at me when his stud finder didn't get the job done and I pulled this one out (he's a Dewalt guy), until it allowed us to map out the entire wall plus voltage. EXTREMELY impressed with this tool.;;Reviewed in the United States on December 31, 2016;;5.0 out of 5 stars;;Outstanding stud finder;;Amazon Customer

Shipping

This product includes free shipping to all US addresses.


Delivery

Orders placed now will arrive in 6-9 business days. Tracking information will be automatically provided as soon as your order ships.


View our full shipping policy here.

Returns

This product can be returned within 30 days of delivery for a full refund. Please visit our returns center to begin a return.

View our full returns policy here.

Top Amazon Reviews


1.0 out of 5 stars
By Actual Buyer - Reviewed in the United States on May 21, 2018
Can't differentiate between wood and metal = NOT GOOD
I don't like giving negative reviews, but this thing is a dog with fleas. Went through the instructions using it as directed. Set the sensor for metal. I was looking for the main water shut off valve in a house we bought 2 years ago. The genius who finished the basement drywalled over the valve, hence needing this device. I knew the approximate area where the valve was. So I decided to buy this detector to identify where the pipe and the valve were. Unfortunately, this device doesn't know the difference between wood and metal, cut to the side of the wood, made a hole big enough to put my hand through, and finally found the valve nowhere near where this device sensed metal. Just to be thorough I checked the wood and there are no nails, screws, staples, or anything metal, on the wood, behind the wood, or in front. Given my experience, I would NOT recommend this device. Now I have a 14 x 14 area to repair for something that was 6 x 6.

2.0 out of 5 stars
By lschwarcz - Reviewed in the United States on July 4, 2018
Don't buy. Couldn't locate wood stud behind tiled shower wall.
SUMMARY: Don’t buy. I tried two units and could not reliably find wood studs behind a tiled wall. I’m a handyman and occasionally need to locate wood studs behind tiled shower walls to install safety grab bars. Traditional stud finders work wonderfully on ordinary drywall surfaces. But, when you have thicker materials and other materials like cement backer board or HardiBacker with tile on top things become more challenging for the finder. I’ve been searching for a reliable unit that can find the stud and not give false readings from stuff like water pipes or electrical wires. Testing by drilling a small pilot hole in drywall is an easy and fast fix. Repairing a hole in tile (even a small pilot hole) is a huge task and could be even bigger if I hit a water pipe or electrical wire! This unit claims to be able to find wood studs, metal and electrical wires. I didn’t test the metal or electrical features. I only needed to detect wooden studs behind a tiled shower wall. It did find wood studs. But, not only did it find the studs (slowly but it did find them) but it also detected studs where none existed. If I were to depend on this to drill holes through tile to secure a grab bar I’d end up ruining a perfectly good shower wall! I’ve been using other techniques like finding the stud on the back side of the wall and measuring to the same location in the shower to verify the stud finder was correct. This Bosch GMS120 Multi-Scanner did not work for this use so I’ve returned it for a refund. While not perfect my Franklin Sensors FS710PROProSensor 710+ (available here at Amazon) is cheaper and more reliable! Not perfect but certainly better than the Bosch GSM120. Franklin Sensors FS710PROProSensor 710+ Professional Stud Finder with Built-in Bubble Level and Ruler

1.0 out of 5 stars
By Tom O - Reviewed in the United States on April 10, 2020
High Cost and Lots of Design Flaws
I really expected more from such a good company. I cannot recommend this stud finder to anyone. I'll give you the list of primary issues below. But, the smaller less costly stud finders out perform this one hands down. All my testing was done on standard sheet-rock wall, wood studs, residential standard installation, clean. I would say that #2, visibility, is probably the major issue, and really should have been fixed prior to the product being manufactured and released. 1. Inconsistency - the readings were all over the place, even when I knew where the stud was. False readings were abundant and quite annoying. Detecting the sides of the stud were also inconsistent, even after doing the 3-scan for fine tuning as in the manual. 2. Visibility - the ring light is too bright and the LCD too dim; the ring light causes your pupils to constrict to the point where you can't see the LCD. If you turn on the backlight for the LCD, it only has about a 20 degree angle of good visibility, so you have to move your head up or down to where the scanner is... unless you plan to always scan at eye level... doubtful. Very annoying and unusable. 3. Overly Sensitive to AC - unfortunately, it is so sensitive to AC that it truly interferes with normal use of the scanner. You can be anywhere within a 12 inch radius of AC wiring and the scanner picks that up, which disables the stud finding capability. Again, annoying and unusable at that point.

3.0 out of 5 stars
By Darren B - Reviewed in the United States on March 13, 2018
Not so great - Disappointed after spending this much
As far as finding a stud in my walls, this has been so so. It finds them after about 10 passes back and forth. I have used it about 12 times in my house to locate a stud for hanging a picture or mirror. I go back and forth, back and forth and it gives different readings at different times. I find I have to go VERY slowly and try to center on the stud five times before I trust I have located something. Disappointed, because 20 years ago I purchased a sonic stud finder that lasted until this year, was very inexpensive, and outperformed this one.

4.0 out of 5 stars
By Charles Smith - Reviewed in the United States on November 21, 2017
upped rating from poor to a good tool to have
I initially posted a very poor rating as the scanner appeared to be extremely sensitive giving many false positives for non ferrous metal behind walls. Turns out, the scanner was doing its job. The insulation behind the walls had reflective coating which gave rise to the many false readings. The advantage of this scanner over others like Zircon i520 is that it has a hole to make markings (zircon does not) and it does not require completely new batteries like troubleshooting fixes for Zircon.

4.0 out of 5 stars
By Joel R - Reviewed in the United States on June 26, 2018
I have actually put it down for a $12 yellow brand item which works great. If you need to find stuff deep it ...
I have used this a few times, and it detects so much stuff its hard to use. I have actually put it down for a $12 yellow brand item which works great. If you need to find stuff deep it may work great, for normal studs, it finds nails, wires, wood and just goes nuts. Not sure if i'll ever actually need this, as i wanted it to find floor studs for screwing down(squeaky floor). It didnt do well and if i had thought of it would have sent it back. Im sure under the right conditions, it's great, but i guess i dont know how to use it.

5.0 out of 5 stars
By Amazon Customer - Reviewed in the United States on December 31, 2016
Outstanding stud finder
I was pretty skeptical about buying this item because there were already great stud finders on the market, but I heard bosch makes great measurement devices, so I gave it a shot. My boss laughed at me when his stud finder didn't get the job done and I pulled this one out (he's a Dewalt guy), until it allowed us to map out the entire wall plus voltage. EXTREMELY impressed with this tool.

Recent Reviews


1.0 out of 5 stars
By Actual Buyer - Reviewed in the United States on May 21, 2018
Can't differentiate between wood and metal = NOT GOOD
I don't like giving negative reviews, but this thing is a dog with fleas. Went through the instructions using it as directed. Set the sensor for metal. I was looking for the main water shut off valve in a house we bought 2 years ago. The genius who finished the basement drywalled over the valve, hence needing this device. I knew the approximate area where the valve was. So I decided to buy this detector to identify where the pipe and the valve were. Unfortunately, this device doesn't know the difference between wood and metal, cut to the side of the wood, made a hole big enough to put my hand through, and finally found the valve nowhere near where this device sensed metal. Just to be thorough I checked the wood and there are no nails, screws, staples, or anything metal, on the wood, behind the wood, or in front. Given my experience, I would NOT recommend this device. Now I have a 14 x 14 area to repair for something that was 6 x 6.

2.0 out of 5 stars
By lschwarcz - Reviewed in the United States on July 4, 2018
Don't buy. Couldn't locate wood stud behind tiled shower wall.
SUMMARY: Don’t buy. I tried two units and could not reliably find wood studs behind a tiled wall. I’m a handyman and occasionally need to locate wood studs behind tiled shower walls to install safety grab bars. Traditional stud finders work wonderfully on ordinary drywall surfaces. But, when you have thicker materials and other materials like cement backer board or HardiBacker with tile on top things become more challenging for the finder. I’ve been searching for a reliable unit that can find the stud and not give false readings from stuff like water pipes or electrical wires. Testing by drilling a small pilot hole in drywall is an easy and fast fix. Repairing a hole in tile (even a small pilot hole) is a huge task and could be even bigger if I hit a water pipe or electrical wire! This unit claims to be able to find wood studs, metal and electrical wires. I didn’t test the metal or electrical features. I only needed to detect wooden studs behind a tiled shower wall. It did find wood studs. But, not only did it find the studs (slowly but it did find them) but it also detected studs where none existed. If I were to depend on this to drill holes through tile to secure a grab bar I’d end up ruining a perfectly good shower wall! I’ve been using other techniques like finding the stud on the back side of the wall and measuring to the same location in the shower to verify the stud finder was correct. This Bosch GMS120 Multi-Scanner did not work for this use so I’ve returned it for a refund. While not perfect my Franklin Sensors FS710PROProSensor 710+ (available here at Amazon) is cheaper and more reliable! Not perfect but certainly better than the Bosch GSM120. Franklin Sensors FS710PROProSensor 710+ Professional Stud Finder with Built-in Bubble Level and Ruler

1.0 out of 5 stars
By Tom O - Reviewed in the United States on April 10, 2020
High Cost and Lots of Design Flaws
I really expected more from such a good company. I cannot recommend this stud finder to anyone. I'll give you the list of primary issues below. But, the smaller less costly stud finders out perform this one hands down. All my testing was done on standard sheet-rock wall, wood studs, residential standard installation, clean. I would say that #2, visibility, is probably the major issue, and really should have been fixed prior to the product being manufactured and released. 1. Inconsistency - the readings were all over the place, even when I knew where the stud was. False readings were abundant and quite annoying. Detecting the sides of the stud were also inconsistent, even after doing the 3-scan for fine tuning as in the manual. 2. Visibility - the ring light is too bright and the LCD too dim; the ring light causes your pupils to constrict to the point where you can't see the LCD. If you turn on the backlight for the LCD, it only has about a 20 degree angle of good visibility, so you have to move your head up or down to where the scanner is... unless you plan to always scan at eye level... doubtful. Very annoying and unusable. 3. Overly Sensitive to AC - unfortunately, it is so sensitive to AC that it truly interferes with normal use of the scanner. You can be anywhere within a 12 inch radius of AC wiring and the scanner picks that up, which disables the stud finding capability. Again, annoying and unusable at that point.

3.0 out of 5 stars
By Darren B - Reviewed in the United States on March 13, 2018
Not so great - Disappointed after spending this much
As far as finding a stud in my walls, this has been so so. It finds them after about 10 passes back and forth. I have used it about 12 times in my house to locate a stud for hanging a picture or mirror. I go back and forth, back and forth and it gives different readings at different times. I find I have to go VERY slowly and try to center on the stud five times before I trust I have located something. Disappointed, because 20 years ago I purchased a sonic stud finder that lasted until this year, was very inexpensive, and outperformed this one.

4.0 out of 5 stars
By Charles Smith - Reviewed in the United States on November 21, 2017
upped rating from poor to a good tool to have
I initially posted a very poor rating as the scanner appeared to be extremely sensitive giving many false positives for non ferrous metal behind walls. Turns out, the scanner was doing its job. The insulation behind the walls had reflective coating which gave rise to the many false readings. The advantage of this scanner over others like Zircon i520 is that it has a hole to make markings (zircon does not) and it does not require completely new batteries like troubleshooting fixes for Zircon.

4.0 out of 5 stars
By Joel R - Reviewed in the United States on June 26, 2018
I have actually put it down for a $12 yellow brand item which works great. If you need to find stuff deep it ...
I have used this a few times, and it detects so much stuff its hard to use. I have actually put it down for a $12 yellow brand item which works great. If you need to find stuff deep it may work great, for normal studs, it finds nails, wires, wood and just goes nuts. Not sure if i'll ever actually need this, as i wanted it to find floor studs for screwing down(squeaky floor). It didnt do well and if i had thought of it would have sent it back. Im sure under the right conditions, it's great, but i guess i dont know how to use it.

5.0 out of 5 stars
By Amazon Customer - Reviewed in the United States on December 31, 2016
Outstanding stud finder
I was pretty skeptical about buying this item because there were already great stud finders on the market, but I heard bosch makes great measurement devices, so I gave it a shot. My boss laughed at me when his stud finder didn't get the job done and I pulled this one out (he's a Dewalt guy), until it allowed us to map out the entire wall plus voltage. EXTREMELY impressed with this tool.