You can use the Mark II Magnaprobe to quickly identify & confirm that all your separated neodymium magnet discs & rods have their poles pointing in the same direction. We use it to confirm this before we mount 5x5mm rod magnets in our AtoMag™ magnetic molecular models.
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.
The basic Mark II Magnaprobe is a convenient way to ensure that all your magnets share the same alignment. It does not require batteries; it ALWAYS works. The Mark 2 Magnaprobe can be used to determine the magnetic orientation of any our Permanent Magnets. Click on the video below to see the Mark II Magnaprobe in action as a magnetic pole indicator.
Note: the video references our original domain, indigo.com which we sold 2018.01.11. Please bookmark our current website which is indigoinstruments.com.
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 will ruin the device.
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!