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... 1.60" - 2.00" / 40.6-50.8mm Measuring Range 0.00005" / 0.001mm Resolution + 0.0002" Accuracy Features Include... IP54 Rated Protection 90° Display Rotation Large LCD Display Inch / mm conversion Carbide Measuring Surfaces Spring Loaded Trigger Contact Points to measure near bottom of blind holes Micro USB Data Output - Cable available 6" Extension Rod available Includes Setting Ring Available With or Without 6" Extension Rod