are parallel and come with three equally spaced grooves, which allow itself to be pressed into the cylindrical body to deform itself and hold a component in place. Once the pin is thrust into a dimensionally accurate hole, a locking fit is achieved.

are high precision gauges with excellent wear-resistant qualities, it can be used to test small boring holes in test pieces. The pins are an excellent alternative to expensive testing equipment to measure angularity, distance between holes, dovetail guides, profile depths and groove measurements.