Starrett DISC MICROMETER, 25-50mm, 0.01mm GRADS

Features Advanced sleeve design with staggered lines and distinct figures for precise and easy readability Quick-reading figures - every thousandth numbered on inch tools Balanced frame and thimble design ensure easy handling and better readability Quick and easy adjustment Starrett satin chrome finish - no glare - resists rust Ring-type knurled lock nut for quick and sure locking The combination ratchet and speeder for uniform pressure and quicker adjustment on all sizes Gracefully designed tapered frame for use in narrow slots and tight places Anvil and spindle discs are 1/2" (12.7mm) diameter tapering to .015" (0.4mm) edge thickness making it possible to enter narrow grooves and recesses Rigid one-piece frame of drop forged steel Extremely hard and stable one-piece spindle Micro-lapped measuring faces This tool is accurate to .00015" or 0.003mm measuring over the whole surface and .0002" or 0.004mm measuring on the edges     Specifications Made in America: Yes Micrometer Type: Disc-Type Micrometers with rotating spindle Range (mm): 0-50mm Graduations (mm): 0.01mm Anvil/Spindle Material: Steel Anvil Type: Flat Disk Spindle Type: Flat Disk Lock Nut Type: Knurled Ring Type Thimble Type: Ratchet