Handheld Digital Tesla Meter High Precision Gaussmeter Fluxmeter Surface Magnetic Field Tester with Probe 0-2400mT

TD8620 Handheld Digital Tesla Meter High Precision GaussmeterThe Amazon listing stated the product would arrive in approximately 1 week. Then after the order was placed, the delivery date was about 1 month. The product shipped roughly the day after I ordered it, and from China.I received the meter roughly 8 days after the order was placed. So, I am very happy with the quick shipping by the seller!The meter arrived unharmed in a small tan "gift" box. The box is a sturdy single-ply cardboard, but actually nicer than I expected. There is an instruction manual included, and is entertaining to read through. The device is very easy to use, and if you can install the battery, you should be able to operate the meter. Read the manual anyway.There is a protective cover over the Hall Sensor. The cover fits snugly when installed, and must be removed to take readings. Be very careful when removing the cover, as the sensor and the arm it is mounted on could be damaged.The meter case is all plastic, not an expensive looking item, perhaps slightly toy-like in appearance. The simple function buttons are easy to operate, positive in action and well, simple to use. The lead from the meter to the hand-held sensor is reasonably long, long enough to almost get in the way.I don't know if the meter is calibrated to any scientific standard, but it does measure consistently and repeatably.Currently, I use the meter to measure the strength of guitar pickup magnets, and other similar items. I do not know if this meter can measure neodymium magnets, as they may be out of range.For the price, this appears to be exactly what I needed in a gaussmeter.

I'm using this for measuring the strength of guitar magnetic pickup magnets. It also shows the magnetic polarity ie: North or South poles. It is very important how you orient the probe in the magnetic field as the maximum field reading is obtained when the field lines are orthogonal to the face of the sensor chip. Making a drawing of how the field lines should be oriented around the magnet being measured can be helpful.This meter is a very inexpensive Hall Effect measurement. It's simple and intuitive to use. The probe contains a Hall effect sensor mounted on a thin pc board, so it is very fragile. I was considering making my own meter before I found this product. I cannot vouch for the absolute accuracy, but then I knew I wasn't buying a lab standard for 30 bucks. I was able to tell the difference between Alnico 2, Alnico 5 humbucker magnets and compare these to Neodymium magnets.

The meter is easy to set up and use.

Man, the readings on this thing were all over the place. Tried to use it for my daughter's science experiment on how temperature affects magnetic moment and she had to scratch the whole thing and go with something else.

Item was as described and very reasonable.