{"product_id":"spi-cms160809110-mechanical-depth-micrometer-4-in","title":"Spi CMS160809110 Mechanical Depth Micrometer 4 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI CMS160809110 is a mechanical depth micrometer designed for precise depth measurement in machining, tooling, and inspection applications. It covers a maximum measurement range of 4 inches using a set of four interchangeable rotating rods, each with a diameter of 0.176 inches (4.50 mm). The ratchet stop thimble ensures consistent measuring pressure, reducing operator-to-operator variation. Graduation is 0.001 inches with an accuracy of 0.0002 inches, making it suitable for close-tolerance work. The measuring faces are hardened steel for long service life. The unit ships NIST certified and includes a short-form certificate of calibration.\u003c\/p\u003e\n\u003cp\u003eThis depth micrometer is used in metal fabrication shops, machine shops, toolrooms, and quality control environments where accurate depth readings are required for bores, slots, steps, and shoulders. The 2.25-inch base length provides stable seating across a range of workpiece geometries. Machinists, tool and die makers, quality technicians, and metrologists are the primary users. The included case keeps all four rods and accessories organized between uses.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-inch maximum measurement range with four interchangeable rotating rods\u003c\/li\u003e\n  \u003cli\u003eRatchet stop thimble for consistent, repeatable measuring force\u003c\/li\u003e\n  \u003cli\u003e0.001-inch graduation with 0.0002-inch accuracy\u003c\/li\u003e\n  \u003cli\u003eHardened steel measuring faces for durability in production environments\u003c\/li\u003e\n  \u003cli\u003eNIST certified with short-form certificate of calibration included\u003c\/li\u003e\n  \u003cli\u003e2.25-inch base length for stable contact on workpiece surfaces\u003c\/li\u003e\n  \u003cli\u003eIncludes carrying case and torque wrench for rod changes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose mechanical depth micrometer for use with standard inch-system depth measurement tasks; compatible with any setup requiring 0 to 4-inch depth range coverage via interchangeable rod extension.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eDepth micrometers should be handled and stored by qualified inspection or machining personnel following standard metrology practices. Before use, clean the base and rod faces with a lint-free cloth and verify the zero setting against a reference surface. Do not overtighten the rod lock nut; use the included torque wrench for rod changes to avoid damaging the spindle thread. Recalibrate periodically per your facility quality management schedule to maintain NIST traceability.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Measurement Range\u003c\/strong\u003e: 4 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: 0.0002 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRod Diameter\u003c\/strong\u003e: 0.176 inches (4.50 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRod Type\u003c\/strong\u003e: Rotating, interchangeable\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Rods\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThimble Type\u003c\/strong\u003e: Ratchet Stop\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBase Length\u003c\/strong\u003e: 2.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasuring Face Material\u003c\/strong\u003e: Hardened Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCalibration Standard\u003c\/strong\u003e: NIST Certified\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTraceability Certification\u003c\/strong\u003e: NIST\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes\u003c\/strong\u003e: Case, Short Form Certificate of Calibration, Torque Wrench\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: 1.83 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: CMS160809110\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51716477223218,"sku":"CMS160809110","price":256.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/af35be93d6e791bace81910baecc00bf.jpg?v=1788526642","url":"https:\/\/voomisupply.com\/products\/spi-cms160809110-mechanical-depth-micrometer-4-in","provider":"Voomi Supply","version":"1.0","type":"link"}