Craftsmen's Spring Eternal Caliper, 8", Steel, with solid nut

Craftsmen's Spring External Caliper 8" Long High Grade Steel    The Groz Craftsmen’s Spring External Caliper is one of the finest calipers which are especially useful for craftsmen. Made from a high-grade steel, these calipers’ legs are machined to a smooth taper and coated with a black powder finish. Securing these legs are finely machined and polished nut run smoothly for a precise dimension and measurement. The fulcrum stud has a large bearing surface preventing side deflection of legs. The divider points are hardened 50-55 HRC for increased wear resistance.