Mitutoyo Inside Groove Caliper The Mitutoyo Inside Caliper is specially designed for inside measurements in hard-to-reach places. Gage Specifications... 0.4" - 6" / 10-150mm Measuring Range 0.0005" / 0.01mm Resolution 1" / 25mm Measuring Depth Features include... Inside Groove Type Jaw SPC data output Fitted plastic case Functions include... Origin-set, Zero-setting, Power On/Off, Data output, inch/mm conversion Alarm: Low voltage, Counting value composition error