Standard Pack = 1 piece(s). Type = Outside Inch Micrometer Set ; Set Range = 0 - 3 Inch ; Graduation = 0.0001 Inch ; Flatness = 0.00003 Inch ; Diameter Of Measuring Faces = 0.256 Inch ; Features = Hammertone Blue Baked Enamel Finish, Anvil & Spindle Hardened And Precision Ground With Microlap Finish On Tips, Spindle Thread Hardened, Ground And Lapped For Ultimate Accuracy, Positive Lever Locking Clamp ;