INSIZE Electronic Depth Caliper w/Hooks Features include... 0-6" / 150mm Measuring Range 0.0005" / 0.01mm Resolution 4" Base DIN862, hardened stainless steel construction Stainless steel, hardened beam and base Buttons: zero set, power on/off, inch/mm conversion Recessed zero button prevents it from being pressed by accident Battery SR44, includes one spare battery Data output via USB Supplied in fitted storage case