The Groz Jenny Caliper is an essential tool for any machinist or engineer. Made from selected steel, this caliper has a leg that holds the adjustable point, which is offset and has a locating lug incorporated in the straight leg. The tip of the caliper is hardened to 54-62 HRC, making it durable and long-lasting.

The Jenny Caliper is extremely useful in layout work and can be used for locating and testing centers, laying off distances from an edge, and more. The caliper's design allows for easy marking of arcs along the edge of workpieces, making it a versatile tool for a variety of applications.