Mechanical Outside Micrometer Set, Range 0 in to 3 in, Resolution 0.001 in, Accuracy +/-0.0001 in, SPC Output No, Long Form Calibration Certificate No, Dimension Type Inch, Micrometers Included 1 in, 2 in, 3 in, Number of Micrometers 3, Operation Type Mechanical, Thimble Type Ratchet, Anvil Material Carbide Tipped, Anvil Shape Flat, Case Included Yes, Includes 2 Standards, Carbide Faces, Fitted Case, Positive Locking Clamp, Spanner Wrenches, Spindle Shape Round