Electronic Pistol Grip Bore Gage for I.D. Measurement A pistol grip electronic bore gage allows for single handed operation with right or left hand viewing. The self-centering, 3-point head allows for highly accurate internal measurements. Specifications Include... 0.500" - 0.650" Measuring Range + 0.00016" Accuracy 2.6" Length of Measuring Head Digital Indicator Specifications include... 0-.5" / 12.7mm Measuring Range 0.0005" / 0.001mm Resolution + 0.0003" / 0.008mm Accuracy 360° Face Rotation Features Include... Self-centering 3-Point head for higher accuracy Carbide tipped contact points Certified Setting Ring Included Furnished with fitted aluminum case