Bore Gauge without Digital Indicator Range 1 in to 1.200 in Resolution 0.00005 in/0.001 mm SPC Output 2124 Actuation Type Pistol Grip Contact Style 3 Point Dimension Type Inch Includes Indicator No Maximum Measurement - Inch 1.2000 in Minimum Measurement - Inch 1 in Operation Type Digital Accuracy +/-0.00016 in Contact Point Material Carbide Includes Setting Ring Extension Rod Repeatability 0.0001 in