Trueing calipers are a type of watchmaking tool used to accurately measure the parts of a watch. They have two arms with flat faces on the end that are used to measure the size and shape of watch parts such as screws, bridges, plates, and other components. The arms of the caliper can be adjusted to fit the part being measured and are then locked in place with a locking screw. Once the arms are set, the trueing caliper is used to precisely measure the part’s size and shape. This is an essential tool for watchmakers who need to ensure the accuracy of their watch components.
