{"product_id":"starrett-50342-inside-spring-joint-caliper-12-in","title":"Starrett 50342 Inside Spring Joint Caliper 12 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe STARRETT 50342 is a 12-inch leg, spring joint inside caliper built for precise inside measurement in metal fabrication, machining, and maintenance trades. The caliper features a flat leg profile and a solid nut with screw adjustment, allowing the technician to lock in a measurement and transfer it to a rule or micrometer with confidence. The body is steel with a polished finish, giving it durability and resistance to shop wear. Maximum measurement capacity reaches 12 inches (300mm). This tool is a standard in the toolkit of machinists, pipefitters, and millwrights who need repeatable inside dimension readings without the bulk of a digital instrument.\u003c\/p\u003e\n\u003cp\u003eThe STARRETT 50342 is suited for inside measurement tasks in job shops, maintenance facilities, and production environments. It is compatible with the Starrett 73 accessory line. Typical applications include measuring bore diameters, pipe inside diameters, and slot widths where a direct-reading instrument is either unavailable or impractical. The screw adjustment method provides fine control when setting the caliper to a target dimension before transferring the reading.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e12-inch (300mm) maximum inside measurement capacity\u003c\/li\u003e\n  \u003cli\u003eSpring joint design maintains consistent tension during use\u003c\/li\u003e\n  \u003cli\u003eFlat leg profile for accurate contact inside bores and slots\u003c\/li\u003e\n  \u003cli\u003eSolid nut with screw adjustment for precise, repeatable settings\u003c\/li\u003e\n  \u003cli\u003eSteel construction with polished finish for shop durability\u003c\/li\u003e\n  \u003cli\u003eCompatible with Starrett 73 accessories\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with the Starrett 73 accessory line. This inside caliper is a standard OEM-style measuring tool suited for general inside measurement applications in machining and maintenance trades.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis caliper is a hand measurement tool and does not require installation in the traditional sense. Before use, ensure the caliper legs are clean and free of burrs that could affect contact accuracy. Set the desired dimension using the screw adjustment and lock the solid nut before transferring the reading to a rule or micrometer. Store in a dry location away from corrosive materials to preserve the polished steel finish.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCaliper Type\u003c\/strong\u003e: Inside\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eJoint Type\u003c\/strong\u003e: Spring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLeg Type\u003c\/strong\u003e: Flat\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLeg Length\u003c\/strong\u003e: 12 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Measurement\u003c\/strong\u003e: 12 inches (300mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustment Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNut Type\u003c\/strong\u003e: Solid\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Polished\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.625 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: STARRETT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 50342\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51541664956722,"sku":"50342","price":136.09,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c70ac053d0e0f0f79f9c594f6240f08c.jpg?v=1785881550","url":"https:\/\/voomisupply.com\/products\/starrett-50342-inside-spring-joint-caliper-12-in","provider":"Voomi Supply","version":"1.0","type":"link"}