INSIZE Electronic Centerline Caliper Features include... 1.2" - 40" / 30.5 - 1000mm Measuring Range 0.0005" / 0.01mm Resolution + 0.0047" Accuracy 1.2" Bottom Jaw Point Diameters For measuring hole center distance in same or offset plane Buttons: zero, power on/off, in/mm, preset Data Output Hardened stainless steel Includes plastic box FREE Shipping UPS Ground (Continental US ONLY) Drawing Dimensions... C: 1.220" D (Dia): 1.2" L1: 1.890" L2: 3.465" L: 48.898"