{"product_id":"spi-cms160725075-mechanical-disc-micrometer-2-3-in","title":"Spi CMS160725075 Mechanical Disc Micrometer 2-3 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SPI CMS160725075 is a mechanical disc micrometer designed for precision outside measurement in the 2 to 3 inch range. It uses a ratchet stop thimble to apply consistent measuring pressure, helping eliminate operator-induced variation during repeated measurements. The spindle diameter measures 0.31 inches, and the disc face diameter is 0.79 inches, making it well suited for measuring thin-walled parts, grooves, and disc-shaped workpieces that standard anvil micrometers cannot contact cleanly. Resolution is 0.0001 inches with an accuracy rating of 0.0002 inches. Both the anvil and spindle are steel construction. A NIST Traceability Certificate of Calibration is included. This tool is used by machinists, metrology technicians, and quality control professionals.\u003c\/p\u003e\u003cp\u003eThe CMS160725075 is appropriate for shop floor and inspection room use wherever thin disc or groove geometry requires a flat-faced measuring surface rather than a standard ball or flat anvil. The ratchet stop thimble makes it suitable for high-repetition measurement tasks where consistent feel and repeatable results are critical. It is packaged individually and ships with a protective case and short-form certificate of calibration traceable to NIST standards.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMeasuring range: 2 to 3 inches for outside dimensions\u003c\/li\u003e\n\u003cli\u003eResolution of 0.0001 inches for fine-tolerance measurement\u003c\/li\u003e\n\u003cli\u003eAccuracy rated at 0.0002 inches\u003c\/li\u003e\n\u003cli\u003eRatchet stop thimble ensures consistent measuring force\u003c\/li\u003e\n\u003cli\u003e0.79-inch disc face contacts thin workpieces that standard anvils cannot reach\u003c\/li\u003e\n\u003cli\u003eSteel anvil and spindle construction for wear resistance\u003c\/li\u003e\n\u003cli\u003eNIST Traceability Certification included with case and calibration certificate\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standalone precision measurement instrument for outside diameter and disc geometry measurement in the 2 to 3 inch range. No specific machine or system compatibility applies.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis micrometer requires no installation. Before use, verify the calibration certificate is current and store the instrument in the supplied case when not in use. Do not over-tighten the thimble against the workpiece; use the ratchet stop exclusively to apply measuring force. Periodic cleaning of the anvil and spindle faces with a lint-free cloth is recommended to maintain measurement accuracy.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasuring Range\u003c\/strong\u003e: 2 to 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResolution\u003c\/strong\u003e: 0.0001 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuracy\u003c\/strong\u003e: 0.0002 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisc Diameter\u003c\/strong\u003e: 0.79 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpindle Diameter\u003c\/strong\u003e: 0.31 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation Type\u003c\/strong\u003e: Mechanical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThimble Type\u003c\/strong\u003e: Ratchet Stop\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnvil Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpindle Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Painted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibration\u003c\/strong\u003e: Yes, NIST Traceability Certification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes\u003c\/strong\u003e: Case, Short Form Certificate of Calibration, Standards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 9.85 inches L x 5.32 inches W x 1.82 inches H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.42 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: SPI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: CMS160725075\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51692942524722,"sku":"CMS160725075","price":173.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ae2af1f69bfe5a0b96e7268d9524b009.jpg?v=1788305242","url":"https:\/\/voomisupply.com\/products\/spi-cms160725075-mechanical-disc-micrometer-2-3-in","provider":"Voomi Supply","version":"1.0","type":"link"}