Average Reviews:
(More customer reviews)These things work great, but they're available all over the web for under $20.
If you're paying this guy $108, I've got a bridge in Brooklyn for you...
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This handy new magnetic pole tester provides an instant zero-delay magnetic pole indication. Just press the push-button to activate the built-in electronic circuitry that will indicate the appropriate magnetic pole via LEDs at once.The green LED marks the North pole, the red LED indicates the South pole. The probe is fitted in the tip of a pen-style pole tester. A black mark identifies the center and location of the sensor. Due to the small distance between the probe and the specimen, reliable indications are obtained even with closely spaced pole transition. A magnet's neutral zone can likewise be precisely identified in this manner. It is assumed in all of the foregoing that the pole tester is held in a vertical position relative to the magnet.The electronic magnetic pole tester does not exhibit these disadvantages. It is of rugged design, with no moving parts, ensuring zero-inertia response, and is also readable in the dark and where access is difficult. Even with very strong magnetic fields, there will be no magnetic reversal or demagnetization of the probe.Technical Data* Weight: approx. 31g including battery* Display: two-LED display(green = north, red = south)* Sensitivity: +/-15 mT on/off hysteresis* Operating temperature range: 0C to +50C* Battery: 4 x 1.5V button cell
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