{"product_id":"starrett-53050-tubular-micrometer-8-inch-range","title":"Starrett 53050 Tubular Micrometer 8 Inch Range","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 53050 is a mechanical tubular micrometer designed for measuring large-diameter workpieces and deep bores beyond the reach of standard outside micrometers. It covers an 8-inch measurement range with a graduation of 0.001 inches and an accuracy of 0.0001 inches, making it a reliable choice for precision inspection work. The friction thimble provides consistent measuring force to protect the workpiece and ensure repeatable readings. Five extension rods with a 3\/8-inch diameter are included, each adjustable for length and fitted with hardened and ground anvils. The satin chrome finish resists glare and corrosion in shop environments. Machinists, tool-and-die makers, and quality-control technicians use this instrument for setup and inspection tasks.\u003c\/p\u003e\u003cp\u003eThe STARRETT 53050 is suited for use in machine shops, manufacturing facilities, and quality-assurance environments where large-range measurements are required. It accommodates a 1\/2-inch travel per rod setting, allowing incremental extension across the full 8-inch span. The adjustable rods enable measurement of stepped or varied-diameter features. This tool is appropriate for professional metrology applications where 0.0001-inch accuracy is required and is typically found in environments operating to ASME or ISO dimensional inspection standards.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e8-inch total measurement range for large-bore and large-diameter inspection work\u003c\/li\u003e\n\u003cli\u003e0.001-inch graduation with 0.0001-inch accuracy for precise readings\u003c\/li\u003e\n\u003cli\u003eFriction thimble ensures consistent measuring force and repeatable results\u003c\/li\u003e\n\u003cli\u003eFive extension rods, each 3\/8 inch in diameter, with 1\/2-inch travel increments\u003c\/li\u003e\n\u003cli\u003eHardened and ground anvils on rods are adjustable for length\u003c\/li\u003e\n\u003cli\u003eSatin chrome finish reduces glare and provides corrosion resistance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standalone tubular micrometer for general precision measurement applications requiring an 8-inch range. Extension rods are 3\/8 inch in diameter and intended for use with this instrument as a matched set.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eTubular micrometers are precision instruments and should be handled and stored per the manufacturer recommendations to maintain calibration. Allow the instrument and workpiece to reach the same ambient temperature before measuring to avoid thermal expansion errors. Verify zero calibration before use and after assembling each rod extension. This instrument requires no power source and should be cleaned with a lint-free cloth; avoid solvents that may damage the finish or markings.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement Range\u003c\/strong\u003e: 8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGraduation\u003c\/strong\u003e: 0.001 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuracy\u003c\/strong\u003e: 0.0001 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThimble Type\u003c\/strong\u003e: Friction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Extension Rods\u003c\/strong\u003e: 5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRod Diameter\u003c\/strong\u003e: 3\/8 inch (9.53 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTravel per Setting\u003c\/strong\u003e: 1\/2 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Satin Chrome\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnvil Type\u003c\/strong\u003e: Hardened and Ground, Adjustable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital Counter\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.875 pounds\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: 53050\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51539019694386,"sku":"53050","price":504.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/167c761aa4320adfbfad0b49d7ebd905.jpg?v=1785833013","url":"https:\/\/voomisupply.com\/products\/starrett-53050-tubular-micrometer-8-inch-range","provider":"Voomi Supply","version":"1.0","type":"link"}