INSIZE Electronic Centerline Caliper Features include... 0.8" - 20" / 20.5 - 500mm Measuring Range 0.0005" / 0.01mm Resolution + 0.0035" Accuracy 0.8" 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: 0.945" D (Dia): 0.8" L1: 1.890" L2: 3.465" L: 27.008"