Features Starrett satin chrome finish - no glare - resists rust on all reading surfaces Advanced sleeve design with staggered lines and distinct figures for precise and easy readability Ring-type knurled lock nut for quick and sure locking Combination ratchet and speeder for uniform pressure and quicker adjustment Finger ring for ease of measuring Special rest foot to locate the tool for higher repeatability Extremely hard and stable one-piece spindle (the heart of our accuracy) Specifications Made in America: Yes Micrometer Type: Can Curl Micrometer Range (in): 0 - .500" Graduations (in): .001" Anvil/Spindle Material: Steel Anvil Type: Flat Spindle Type: Flat Lock Nut Type: Knurled Ring Type Thimble Type: Ratchet