The Magna-Mike® 8600 is a portable thickness gauge that uses a simple magnetic method to make reliable and repeatable measurements on nonferrous materials. Operation of the Magna-Mike is very simple. Measurements are made when its magnetic probe is held or scanned on one side of the test material and a small target ball (or disk or wire) is placed on the opposite side or dropped inside a container. The probe's Hall Effect sensor measures the distance between the probe tip and target ball. The measurements are instantly displayed on the large color thickness display as an easy-to-read digital thickness reading.