Mitutoyo ABSOLUTE Digimatic Depth Gage Features include... ABSOLUTE Digimatic Depth Gage can keep track of the origin point once set for the entire life of the battery. Base and measuring faces are hardened and micro-lapped. Large LCD Display With SPC data output. Functions include... Origin-set, Zero-set, Auto power on / off, Alarm: Low voltage Specification include... 0-40" / 1000mm Measuring Range 0.0005" / 0.01mm Resolution Extension Bases Available... # 900367 - 7" Base # 900368 - 10" Base # 900369 - 12" Base