INSIZE Electronic Centerline Caliper Features include... 0.4" - 12" / 10.5 - 300mm Measuring Range 0.0005" / 0.01mm Resolution + 0.0035" Accuracy 0.4" Bottom Jaw 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 Drawing Dimensions... C: 0.630" D (Dia): 0.4" L1: 1.260" L2: 2.559" L: 15.591"