Provides inside, outside, depth and step measuring at a very reasonable price. Rugged stainless steel body and jaws, slide graduated in .100" increments up to 6". Clear, easy-to-read, black-on-white dial is single revolution per .100", graduations in .001". Includes thumb roller, slide lock, and case. Mfg: Lyman SPECS: Approximately 9 1/2" (24cm) long, 1 1/2" (3.8cm) diameter dial. 9 1/2" x 3 1/2" (8.8cm) x 1" (2.5cm) case.