{"product_id":"spi-cms160809021-spline-micrometer-0-1-inch-mechanical","title":"Spi CMS160809021 Spline Micrometer 0-1 Inch Mechanical","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI CMS160809021 is a mechanical spline micrometer designed for precision measurement of splined shafts, keyways, and other narrow-profile workpieces that standard anvil micrometers cannot reach. It covers a measurement range of 0 to 1 inch with a resolution and accuracy of 0.0001 inch, making it suitable for close-tolerance inspection work in machining, tool-and-die, and maintenance environments. The 1.26-inch throat depth provides clearance for measuring features recessed from a workpiece edge. A ratchet stop thimble ensures consistent measuring force on every reading, reducing operator-to-operator variation. The unit ships with a case and a short-form certificate of calibration.\u003c\/p\u003e\n\u003cp\u003eThis micrometer is used wherever a conventional outside micrometer lacks the throat clearance or spindle geometry to reach internal splines, slots, or narrow-diameter features. It is suited for precision machining shops, quality control benches, and maintenance departments working on gearbox components, drive shafts, and similar mechanical assemblies. The flat spindle type and 0.25-inch spindle diameter allow the measuring faces to seat cleanly on spline lands without rocking. Licensed machinists, toolmakers, and metrology technicians are the primary users.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0 to 1 inch measurement range with 0.0001 inch graduation and accuracy\u003c\/li\u003e\n  \u003cli\u003e1.26 inch throat depth for access to recessed or deep-set spline features\u003c\/li\u003e\n  \u003cli\u003eRatchet stop thimble for repeatable, consistent measuring force\u003c\/li\u003e\n  \u003cli\u003eFlat spindle type with 0.25 inch spindle diameter for spline land contact\u003c\/li\u003e\n  \u003cli\u003eRotating spindle design with mechanical operation — no battery required\u003c\/li\u003e\n  \u003cli\u003eShips with protective case and short-form certificate of calibration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose mechanical spline micrometer for inspection of splined shafts, keyways, and narrow-feature workpieces requiring 0 to 1 inch outside measurement capability.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis instrument requires no installation; it is a handheld metrology tool used at a workbench or inspection station. Before use, verify the zero setting against the calibration certificate and clean the measuring faces with a lint-free cloth. Store in the supplied case when not in use to protect the measuring faces and thimble mechanism from damage. Recalibration intervals should follow the facility quality plan or applicable ISO or ANSI metrology standards.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasurement Range\u003c\/strong\u003e: 0 to 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccuracy\u003c\/strong\u003e: 0.0001 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGraduation\u003c\/strong\u003e: 0.0001 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThroat Depth\u003c\/strong\u003e: 1.26 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpindle Diameter\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpindle Type\u003c\/strong\u003e: Flat\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\u003eRotating Spindle\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Painted\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 7.49 inches L x 3.75 inches W x 1.23 inches H\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.52 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes\u003c\/strong\u003e: Case, Short Form Certificate of Calibration\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 41111601\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: CMS160809021\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51723417747762,"sku":"CMS160809021","price":127.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/28c75a48deab7b64344bc80aa1843440.jpg?v=1788604677","url":"https:\/\/voomisupply.com\/products\/spi-cms160809021-spline-micrometer-0-1-inch-mechanical","provider":"Voomi Supply","version":"1.0","type":"link"}