{"product_id":"spi-cms160725072-disc-micrometer-1-2-in-ratchet-nist","title":"Spi CMS160725072 Disc Micrometer 1-2 in Ratchet Nist","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SPI CMS160725072 is a mechanical disc micrometer designed for precision outside measurement in the 1 to 2 inch range. It uses a rotating spindle with a ratchet stop thimble to deliver consistent, repeatable seating force on each measurement. The disc face measures 0.79 inches in diameter and is made from steel, making it suited for measuring thin-walled parts, sheet stock, and similar workpieces where a standard flat anvil would rock. Resolution is 0.0001 inches with an accuracy rating of 0.0002 inches. A NIST traceability certificate ships with the unit, satisfying documentation requirements in calibrated shop environments.\u003c\/p\u003e\u003cp\u003eThis micrometer is intended for use in precision machining, metrology labs, and quality-control applications where standard anvil geometry is not adequate. The disc design allows access to grooves, ribs, and recessed features on turned or stamped parts. It is appropriate for tool-and-die, aerospace fabrication, and general manufacturing inspection work. The painted finish provides basic corrosion resistance for typical shop conditions. Installation is performed by a calibration technician or qualified metrologist and requires no special tools beyond the instrument itself.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1 to 2 inch measuring range with 0.0001 inch graduation\u003c\/li\u003e\n\u003cli\u003eAccuracy of 0.0002 inches for high-precision dimensional inspection\u003c\/li\u003e\n\u003cli\u003e0.79 inch steel disc anvil for measuring thin, slotted, or recessed features\u003c\/li\u003e\n\u003cli\u003eRatchet stop thimble delivers controlled, consistent measuring force\u003c\/li\u003e\n\u003cli\u003eRotating spindle allows smooth advancement to workpiece contact\u003c\/li\u003e\n\u003cli\u003eIncludes carrying case and NIST traceable certificate of calibration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-use precision instrument for outside measurements in the 1 to 2 inch range. Compatible with standard metrology workflows requiring NIST traceable documentation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eHandle with clean, dry hands or lint-free gloves to prevent corrosion from skin oils on the spindle and anvil surfaces. Store in the included case when not in use to protect calibration and disc geometry. Do not exceed the rated measuring range, as forcing the spindle beyond its travel can damage the thread mechanism. Recalibration intervals should follow shop QC procedures or applicable ISO measurement system standards.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasuring Range\u003c\/strong\u003e: 1 to 2 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\u003eSpindle Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnvil 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 included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Resistance\u003c\/strong\u003e: None\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 8.67 inches L x 4.53 inches W x 1.78 inches H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.98 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: CMS160725072\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51719561412914,"sku":"CMS160725072","price":292.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/bddaebcca194fe2c6ed89fd80d2d142c.jpg?v=1788560137","url":"https:\/\/voomisupply.com\/products\/spi-cms160725072-disc-micrometer-1-2-in-ratchet-nist","provider":"Voomi Supply","version":"1.0","type":"link"}