Mechanical Bore Gauge Range 1.4 in to 2.4 in Dial Graduation 0.0005 in Operation Type Mechanical Contact Style Anvil Dimension Type Inch Includes Indicator Yes Maximum Measurement - Inch 2.4 in Minimum Measurement - Inch 1.4 in Requires Indicator Yes Accuracy +/-0.0009 in Contact Point Material Ceramic Includes Case Yes Series 2323 Repeatability 0.00015 in