Mechanical Interchangeable-Anvil Outside Micrometer Range 36 in to 42 in Resolution 0.001 in Accuracy +/-0.0001 in SPC Output No Long Form Calibration Certificate Yes Anvil Shape Blade Anvil Size 0.030 in Dimension Type Inch Operation Type Mechanical Thimble Type Plain Anvil Material Steel Case Included Yes Case Type Wooden Features Interchangeable Anvils Micro-Lapped Measuring Faces No Glare Satin Chrome Finish One-Piece Spindle Standards With Insulated Grips