Magnetic Pole Detector

SKU: 44702

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Buy a genuine made in UK Mark II Magnaprobe™ . Why buy a cheap copy with a smaller, weaker magnet & flimsy handle? This non-contact, analog device is ideal for physics labs to demonstrate the 3D nature of magnetic fields & Q/A applications where pole direction is important. 

The MkII Magnaprobe™ works better than a compass for demonstrating the three dimensional nature of magnetic fields around bar magnets used in physics labs. It has a dipole axis that aligns in parallel to a magnetic field. The MkII Magnaprobe™ is a non-contact magnetic pole indicator detector that can easily find hidden magnets or hidden metal objects such as nails.

Genuine UK made Magnaprobes™ are sturdy, non-contact, analog devices for demonstrating the 3D nature of magnetic fields. Beware cheap copies which will fail if you try this more than once.
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Details

The Magnaprobe is a fascinating way to demonstrate the three dimensional nature of magnetic fields. It consists of a small alnico bar magnet that is gimbal mounted so that it will freely rotate to map out x, y and z coordinates as you move it around a magnetic source.

Note: Avoid contacting other magnets. If you do so by accident, detach the Magnaprobe by holding its magnet. Do not simply pull back with the handle as you may ruin the device.

Another neat application is how we used a Mark II Magnaprobe to detect eddy currents in this blog: Eddy Current Copper Tube Drop Tower Brake Test.

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Specifications

Because of the many cheap copies of the Cochranes of Oxford Magnaprobe MarkII, specifications are propriety. Performance is determined by the grade of AlNiCo used in the magnet, its size & the precision of its dimensions. Further, the type of plastic & its precision of manufacture greatly impact its long term reliability.

We can say, however, that the AlNiCo bar magnet is a high grade making it very sensitive & is gimbel mounted. The handle is 3.25mm thick & virtually indestructible. You get what you pay for!

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