INSIZE Electronic Caliper w/Carbide Jaws Features include... 0-12" / 300mm Measuring Range Resolution: 0.0005" / 0.01mm Wear resistant carbide tipped outside and inside jaws for inside and outside measurements 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 DIN862, hardened stainless steel construction Supplied in fitted storage case Includes Inspection Certificate traceable to NIST