Mechanical Bore Gauge without Mechanical Indicator Range 0.7 in to 1.4 in Dial Graduation 0.00005 in 0.0001 in 0.001 in Operation Type Mechanical Contact Style Anvil Dimension Type Inch Includes Indicator No Maximum Measurement - Inch 1.4 in Minimum Measurement - Inch 0.7 in Requires Indicator Yes Accuracy 157 micronin Contact Point Material Carbide Includes Case Yes Series 2422 Compatible Dial Graduations 0.00005 in 0.0001 in 0.001 in Repeatability 79micron in