Standard Pack = 1 piece(s). Type = Digit Counter Ball-Anvil Micrometer ; Range = 0 - 1 Inch ; Resolution = 0.0001 Inch ; Accuracy = 0.00016 Inch ; Digital Counter Reads To = 0.001 Inch ; Sleeve Reads To = .0001 Inch ; Features = Hammertone Blue Baked Enamel Frame Furnished With Deluxe Heat Insulator, No. 52-244-201-1 Spindle Hardened And Precision Ground With A Carbide Tipped Measuring Face, No. 52-244-301-1 Anvil Is Hardened And Precision Ground, Spindle Thread Hardened, Ground & Lapped, Ratchet Stop Thimble On All Models, Positive Locking Nut On Spindle, Meets Or Exceeds Federal Accuracy Specs, Includes Wrench For Quick, Easy Zero Adjustment On Sleeve And A Case ;