GOYOJO Handheld High Precision Gaussmeter 0-2400Mt Digital Tesla Meter Tester With Metal Probe Surface Magnetic Field Tester With N/S Function Accuracy ±5%

I'm a Biomagnetic Therapist and I use this to make sure my magnets are of the right Gauss to be therapeutic. Reasonably priced.

Using it to check polarity and strength of magnets on my guitar pickups and it does the trick for me.

It came with no battery. Could have saved me some time if this was stated in the description.

Hey, just picked up this handheld gauss meter to sanity-check magnets and speakers. Value’s decent—cheaper than lab gear, pricier than the toy pens. Functionally, it reads up to the high end of what I’ll ever need and flips N/S so you know which face is which. Size is truly handheld; throw it in a tool roll without displacing your tape measure. Quality is fine: buttons click cleanly, the probe lead feels better than bargain silicone, and the display is legible under shop lights. Durability seems fair—don’t kink the probe and it’ll live a long life. Fitment isn’t really a thing, though the metal probe sits solidly in the port and the tip is small enough to pinpoint a magnet on a motor can. Ease of use is straightforward: power on, zero it in free air, and start checking fixtures or knife blocks. For the money, it’s a handy bench tool for anyone who tinkers with motors, speakers, or magnetic mounts.

I got this gaussmeter for hobbyist use, to test relative strength of magnets and do experiments involving magnetism. It was easy to use and worked decently testing various magnets. Display updated quickly, about ten times per second. The on-screen bar graph was useful for quickly scanning something to find where magnets are hidden below, or to find the highest point. The peak hold function was especially useful so I could scan probe over the surface then see the maximum field encountered. It has plenty of range, measuring 349 mT for a large 40x20 mm Nd magnet (out of its 2000 mT maximum). Lacking a calibrated magnetic test source, to test accuracy I zeroed facing magnetic north, then rotated probe around and got the expected reading equal to the expected magnetic field at my location; I got a 0.04-0.05 mT reading, matching the expected 0.046 mT listed for my location. The probe cover must be removed for proper readings, though left on I could still check N/S poles and get a general idea of stronger and weaker magnets (I put some markings on the cover so the sensor inside will be oriented properly). Meter build is pretty basic and has no stand. Instructions are decent, though don't detail which side of test probe goes next to magnet (TEST side faces magnet, ruler side faces you). This is an OK value, with fairly basic features.