Kynup Digital Caliper, Caliper Measuring Tool, Micrometer Dial Vernier Caliper Digital, Full Turn Off, Stainless Steel, Switch from Inch Metric Fraction, Black(6Inch/150MM)
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Availability:
In Stock.
Arrives
Thursday, May 28
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Model: KY-21B
Features
- High Precision Measuring Tools Kynup digital caliper measuring range is 0-6inch/150mm, accuracy 0.001"/0.02 mm, resolution of 0.0005"/0.01 mm. for more precision measure results, our caliper measuring tool is suitable for jewelry measurement, household, DIY, woodworking, etc.
- Longer LifespanWith a complete power-off button shutdown, Kynup digital caliper measuring tool is completely powered off when the button is pressed, which does not consume battery power and provides a longer service life than other micrometer caliper digital.
- 3 Units ConversionOur dial caliper can be freely switched among inches, millimeters and fractions. 3 kinds of unit switching function can meet your different habits and needs. Digital calipers 6inch more convenient, more widely used to measure the value you want.
- Screen Splash Proof & Stainless Steel MaterialThe dial caliper micrometer is constructed of first-class STAINLESS STEEL, Screen Splash Proof, anti-rust, which has a strong frame with lockable head. The housing is made of metal with black paint on the surface. Note: please do not install the battery backwards.
- 4 Measuring Ways This digital caliper measuring tool is easy to measure depth, step, external and internal diameter, making all your objects measurable. 3 batteries are provided: one installed and other two as spare batteries. Auto shutdown for saving battery after within 6 minutes if without operation.
Brand: Kynup
Material: Stainless Steel
Product Dimensions: 9.29"L x 3.03"W
Measurement Accuracy: 0.002mm
Number of Batteries: 3 LR44 batteries required. (included)
Brand Name: Kynup
Manufacturer: Kynup
Model: KY-21B
Part Number: KY-21B
Item Weight: 6.95 Ounces
Included Components: Case; Digital Caliper
Measurement Accuracy: 0.002mm
Number of Batteries: 3 LR44 batteries required. (included)
Material Type: Stainless Steel
Item Dimensions L x W: 9.29"L x 3.03"W
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, May 28
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Model: KY-21B
I was very pleasantly surprised by these. I bought them because they were about the cheapest calipers that are full featured. The first impression other than the case which is made to last, is the weight. These are heavy, indicative of the quality of the build. The parts fit together with precision. The display dis clear although some of the fractional measurements are a little odd : 59/260" They even give you a screw driver for changing the batteries. Yes the battery cover screws in to place. I've had two previous calipers fail because of the thumb opening cover.
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Reviewed in the United States on January 8, 2026 by dtimo
Model: KY-21B
Much better than my HF plastic one. Solid metal construction and seems very accurate. Used to measure for 20mm watch band and i just received the watchband and it fits perfectly so it did the job. Good solid case to store it in as well. You wont be disappointed
Reviewed in the United States on March 25, 2026 by MDB007
Model: KY-21B
I keep finding more uses for this and it has already saved me more than it cost because I have less rework to do and I'm just a hobbyist. It's very easy to use, basically just turn it on, zero it, and adjust it to match what you're doing--internal measurement, external measurement, and a surprisingly-useful depth measurement thing on the end. It comes with a protective case that is quite substantial and I put it back in there after every use to protect it from other things in my garage-based shop. I've used it to find the depth of slots cut in wood, thickness of wood (very useful to decide if routed molding is good enough rather than by one's own eye), make reproducible measurements (because it shows you digitally and not by you trying to judge little lines). It has both inches and metric, which is important if you're trying to measure existing screws and bolts--I can just put it up there and check both measurement systems, and the one that gives a typical size number is the kind it is! It can give you a rough idea of board thickness, which is especially important if you just tinker and don't have a thickness planer, at least you know which pieces will work pretty well. The buttons press crisply--just enough resistance so you know you pushed them and they pop right back up. The display is very readable, and for the physical lines, I would recommend the white on black even though it was a little more because it's readable at different angles and different lighting. Something I tested was reproducibility of results, measuring things and then shutting it off and on and trying again--no problems there. Great for judging thicknesses of model-making metal strips and things like that because it's hard to tell by eye but this just puts a decimal number on it and I can compare them easily. Still finding new things to do with it, which makes it a kind of MVP as tools go.
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Reviewed in the United States on March 31, 2025 by S. Fannin
Model: KY-21B
Not as accurate as they claim, it just breaks down and rounds to eliminate "jitter". I bought em for knock-arounds, hate digital (trust the dials). About 2 thousanths off, well within bang-around tolerances. These are just to take with me, and for the price are worth it. Also like having multiple sets just to make sure one doesnt need re-calibrated. Heavy, oddly. Rounds to the nearest .0005 so yeah, it does pretty good for the price. Machine shop? Get dials. Seem to hold/return to zero. Above average for the price. Display is fine and they are extremely easy to use. Metric/Imperial is nice. Not a true professionals tool, but jump straight into 120$+ at the most basic. Good value? I'd say so if you want a beater pair, pick some up.
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Reviewed in the United States on April 24, 2025 by Nate
Model: KY-21B
Works perfect for measurement on camera light seal applications...smooth n easy to use...
Reviewed in the United States on April 2, 2026 by FuzzyFocus
Model: KY-21B
Ease of use, quality, storage case, readability... Wow. I boogered up the first order as I thought I originally purchased the black, I did not. Unopen unused it was an easy return to the UPS store. There was no learning curve, intuitively designed. Note: batteries were already installed and a spare set in the case for future use.
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Reviewed in the United States on February 23, 2026 by Fam Amazon
Model: KY-21B
So i work in a shop that deals with a lot of aerospace level of accuracy and Honestly this brand is really good price for its accuracy in the picture I list out things between the different versions as by far my favorite the ip67 0-150mm pair sprayed coolant from the machine directly into the slider and reader area while measuring a part with no issues and more accurate than advertised having had that pair for over 1.5 years now and its still accurate to within 0.01mm total honestly very accurate long lasting and surprisingly good for the price. I cant wait until they come out with a 0-300mm ip67 pair.
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Reviewed in the United States on August 25, 2025 by Amazon Customer
Model: KY-21B
Very nice! Well built works great.
Reviewed in the United States on December 5, 2025 by Kindle Customer