Mechanical Bore Gauge, Range 1.4 in to 2.5 in, Dial Graduation 0.0001 in, Operation Type Mechanical, Contact Style Anvil, Dimension Type Inch, Includes Indicator Yes, Maximum Measurement - Inch 2.5 in, Minimum Measurement - Inch 1.4 in, Number of Spacers 4, Requires Indicator Yes, Accuracy +/-0.00008 in, Contact Point Material Carbide, Includes Case Yes, Number of Anvils 6, Series 511, Repeatability 0.00002 in