Designed in the shape of a pencil with pocket clip and Neodymium Magnet tip. A Stainless Steel wire clip is located in the middle. When the magnet is held, or a line attached to the pivot clip, the "pencil" pivots. The Neodymium is a Rare Earth Magnet.
When passed over a Core Sample the Neodymium Magnet at the tip is attracted to magnetic minerals present in a rock specimen brought into its proximity. The pocket clip location can be adjusted to change the balance angle.
 
Currently the strongest permanent magnets available.