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CMS MAGNETICS

CMS Magnetics - Magnetic Pole Detector, a Handy Polarity Identifier to Determine Magnet's North or South Poles, Great for School Teachers, Science Projects, and Metal Detector

  • Based on 695 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Aug 21
Order within 17 hours and 26 minutes
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Features

  • Ultra-low friction magnet holder allows for this magnetic pole detector to detect magnetic fields from over a foot away
  • Easily detect and identify where the poles on a magnet are in order to safely handle them. This magnetic pole detector consists of a bar magnet with its NORTH pole painted RED and its SOUTH pole painted BLUE
  • Great for educators - Teach and show kids what poles on a magnet are and how they interact with each other.
  • Handy and small for easy transport

Description

This magnetic pole detector is a great low-cost tool to view and identify the polarity of magnets, or to find out if an object is magnetic. Its simple yet durable construction means that this detector makes a great educational tool for teaching students about the properties of magnets and their magnetic fields. This magnetic pole detector consists of a bar magnet with its NORTH pole painted RED and its SOUTH pole painted BLUE. When held up to the south pole of a magnet, the red end of the indicator will point towards the magnet.

Brand: CMS MAGNETICS


Color: black


Batteries Required?: No


Material: Plastic


Power Source: Manual


Brand: CMS MAGNETICS


Color: black


Batteries Required?: No


Material: Plastic


Power Source: Manual


Item Weight: 9.07 g


Product Dimensions: 4.75"L x 1.5"W x 0.13"H


Extended Length: 4.75 Inches


Adjustable Length: Yes


International Protection Rating: IP541


Manufacturer: CMS Magnetics


Item Weight: 0.32 ounces


Item model number: MPD-002


Is Discontinued By Manufacturer: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Aug 21

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.

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Top Amazon Reviews

    • Perfect For Classroom!
This product perfectly tracks the pathway of a magnetic field from one pole of a magnet to another. It also works great for locating the poles on a piece of magnetite. I have a chunk of magnetite that has four poles, and it quickly finds and identifies them. It would have to be a very powerful magnet to identify the pole from a couple feet away. I have a 6" x 1" bar magnet, and it picks that up a foot away. But to show the magnetic field is parallel to the body of the bar magnet it needs to be about an inch away on the sides. I go past the end of the magnet a couple of inches and it definitely shows the field orientation. If the magnet in this sensor gets stuck to a bigger magnet, use care separating the two. Slide the sensors magnet to the edge - don't just yank it off! The product advertising does state that this device is 4.75" long, but I missed that. When I opened the package, I was expecting something a bit longer, but that's on me. The compact size does not detract from the operation at all, and it does make it easier to slip into a shirt pocket. This product is a delicate instrument and should be treated carefully. This is not a defect, pivoting a magnet in two axises requires some small parts. Treat it carefully and will reward you with years of service. Give it to careless kids and it won't last. I like it and will order a couple more. I think you will like it too.h ... show more
Reviewed in the United States on April 16, 2024 by Old Guy
    • Should have bought this a long time ago
Every 3d printer enthusiast who uses magnets in their prints needs to know these exist. I've wasted so much time trying to figure out which side is which on my magnets and this solves it with a single quick glance. It's nice and compact and feels quite sturdy.
Reviewed in the United States on February 1, 2025 by Tydell
    • I like it
good to know where your at
Reviewed in the United States on February 24, 2025 by Ben Capobianco
    • Pretty responsive if trying to locate magnets in phones or laptops
Moves when close to magnets. Doesn't work as compass.
Reviewed in the United States on April 11, 2025 by buy more stuff
    • Polarity NOT Marked
A simple stamped "N" and/or "S" on the magnet, or even a label on the handle would help. I had to return to the listing and reviews to reaffirm my guess that RED = NORTH and blue is south. Is the color marking based on Civil War or what (Republicans = North vs slavery-loving democrats = south)?
Reviewed in the United States on October 9, 2024 by techon
    • I installed my magnets backwards
Until I got this little gadget. At first I was using the earth to determine which way was North and South on the magnets like a compass. But apparently I swapped a couple around or the magnet wasn't strong enough to straighten itself out with the magnetic pull. Now I just use this and I get it right all the time. ... show more
Reviewed in the United States on September 19, 2024 by Benjamin Urbi
    • Very small, light weight and will break easy, but very good
Inexpensive, but I will need to find a box to put it in. In an interesting way it also identifies to a certain degree just how strong the magnet it. It snaps for strong batteries and you can also read its magnetic field as you move it away from the magnet. It was very interesting. Glad I bought, but I do need to find a better safe keeping spot for it... ... show more
Reviewed in the United States on June 5, 2024 by Seaglass
    • Poles are marked wrong
North is south. Junk
Reviewed in the United States on January 26, 2025 by JMM

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