Anvils sized at .250" (6.35mm) diameter for ease of use on larger work Accurate, rugged, and easy to use Includes attractive, protective case, which keep micrometers and standards together and readily accessible Hard and stable one-piece friction thimble permits one-hand operation of micrometer and uniform contact pressure Balanced frame and thimble design ensure easy handling Gracefully designed tapered frame for use in narrow slots and tight places Micro-lapped measuring faces Starrett No-glare satin chrome finish on thimble and sleeve minimizes annoying surface glare under bright lights and resists rust Recommended for mechanics, automotive service and machine shops, toolrooms, inspection departments and wherever gaging involves a wide range of measurements Anvil Type Flat Anvil/Spindle Material Carbide Frame Finish Black Wrinkle Graduations 0.0001" Includes 1" - 12" Micrometers in Increments of 1"; 1" - 11" Standards in Increments of 1"; Adjusting wrench; Wood Case Lock Nut Type Knurled Ring Type Measuring Range 0" - 12" (0 mm - 304.8 mm) Spindle Type Flat Thimble Type Ratchet