FEATURES Rugged construction and extremely attractive design Strong ribbed frame with smooth black enamel finish and polished steel ribs and hub Furnished in an attractive, protective case to keep micrometer and standards readily accessible Advanced sleeve design with staggered lines and distinct figures for precise and easy readability Balanced frame and thimble design ensure easy handling and better readability Ring-type knurled lock nut for quick and sure locking Hard and stable one-piece friction thimble permits one-hand operation of micrometer and uniform contact pressure Micro-lapped measuring faces Starrett No-glare satin chrome finish on thimble and sleeve minimizes annoying surface glare under bright lights and resists rust SPECIFICATIONS Made in America: Yes Micrometer Type: Outside Micrometer Set Set Range (mm): 0-75mm Graduations (mm): 0.001mm Resolution (mm): .001mm Micrometer Sizes: 25,50,75mm Micrometers Included: 3 Anvil/Spindle Material: Carbide Anvil Type: Flat Spindle Type: Flat Lock Nut Type: Knurled Ring Type Thimble Type: Ratchet Thimble Graduations: Metric Standards Included: 25,50mm Case Type: Wood Case