Mechanical Bore Gauge without Mechanical Indicator Range 2 in to 5.9 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 5.9 in Minimum Measurement - Inch 2 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