{"product_id":"starrett-68033-outside-micrometer-6-inch-friction-thimble","title":"Starrett 68033 Outside Micrometer 6 Inch Friction Thimble","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 68033 is a mechanical outside micrometer designed for high-precision linear measurement of external dimensions. It covers a full 6-inch measurement range with a graduation of 0.0001 inches and a certified accuracy of 0.000050 inches, making it suitable for close-tolerance inspection work in machine shops, manufacturing, and maintenance environments. The thimble uses a friction-drive mechanism to apply consistent measuring pressure and prevent spindle overload. Flat anvil and spindle faces are constructed from solid carbide for wear resistance and long-term repeatability. A ring-style lock nut secures the spindle position when a reading is taken.\u003c\/p\u003e\u003cp\u003eThe 68033 is used wherever tight dimensional verification is required on cylindrical or flat stock, shafts, fasteners, or machined components. Typical users include machinists, tool-and-die technicians, quality-control inspectors, and precision maintenance trades. The satin chrome finish reduces glare under shop lighting. The instrument ships with a lock nut and a wrench, so no additional tooling is required for initial setup or field adjustment.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e6-inch maximum measurement range with 0.0001 inch graduation\u003c\/li\u003e\n\u003cli\u003eAccuracy of 0.000050 inches for close-tolerance inspection\u003c\/li\u003e\n\u003cli\u003eFriction thimble for consistent, repeatable measuring pressure\u003c\/li\u003e\n\u003cli\u003eSolid carbide measuring faces on both anvil and spindle resist wear\u003c\/li\u003e\n\u003cli\u003eRing-type lock nut holds spindle position during reading transfer\u003c\/li\u003e\n\u003cli\u003eSatin chrome finish reduces glare and resists corrosion\u003c\/li\u003e\n\u003cli\u003eIncludes lock nut and wrench for quick field adjustment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose outside micrometer for standard bench and field measurement applications where a 6-inch range mechanical instrument with friction thimble is specified.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eOutside micrometers require no power or mounting, but should be stored in a protective case away from heat sources and cutting fluids to maintain calibration. Before use, clean anvil and spindle faces with a lint-free cloth and verify zero at the appropriate standard. Periodic calibration against a certified gauge block set is recommended to confirm continued accuracy. Do not force the thimble against the workpiece — allow the friction drive to control measuring pressure.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Measurement Range\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGraduation\u003c\/strong\u003e: 0.0001 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuracy\u003c\/strong\u003e: 0.000050 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThimble Type\u003c\/strong\u003e: Friction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnvil Type\u003c\/strong\u003e: Flat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasuring Face Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnvil Diameter\u003c\/strong\u003e: 0.2500 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpindle Diameter\u003c\/strong\u003e: 0.2500 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLock Nut Type\u003c\/strong\u003e: Ring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Satin Chrome\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes\u003c\/strong\u003e: Lock Nut, Wrench\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.6 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStarrett Number\u003c\/strong\u003e: T436.1XFL-6\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: STARRETT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 68033\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51542797418802,"sku":"68033","price":431.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/53a49685bfb5adc5d85e0c457330b7ba.jpg?v=1785907719","url":"https:\/\/voomisupply.com\/products\/starrett-68033-outside-micrometer-6-inch-friction-thimble","provider":"Voomi Supply","version":"1.0","type":"link"}