{"product_id":"starrett-50366-outside-caliper-spring-joint-6-inch","title":"Starrett 50366 Outside Caliper Spring Joint 6 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 50366 is a spring-joint outside caliper designed for taking outside measurements on workpieces in machine shop, fabrication, and tool-and-die applications. The caliper features 6-inch flat legs made from polished steel, giving it a smooth finish that resists corrosion and wear during regular shop use. A solid nut and screw adjustment method allow the technician to set the leg spread precisely and hold the measurement reliably while transferring it to a rule or scale. At 0.25 pounds, the 50366 is light enough for all-day hand use without fatigue.\u003c\/p\u003e\u003cp\u003eThis caliper is suited for machinists, toolmakers, pipefitters, and general trade professionals who need a quick, repeatable method for gauging outside dimensions without a digital or vernier instrument. It handles outside measurements up to 6 inches (150 mm), making it practical for shafts, fittings, round stock, and similar workpieces found in both production and maintenance settings. The spring-joint design automatically returns the legs to a set opening, keeping the measurement consistent between pickups.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSpring-joint construction automatically maintains leg spread for consistent measurement transfer\u003c\/li\u003e\n\u003cli\u003e6-inch flat legs provide up to 6 inches (150 mm) outside measurement capacity\u003c\/li\u003e\n\u003cli\u003eSolid nut with screw adjustment for precise, lock-in setting\u003c\/li\u003e\n\u003cli\u003ePolished steel construction resists corrosion and wear in shop environments\u003c\/li\u003e\n\u003cli\u003eCompatible with the Starrett 79 rule for direct measurement reading\u003c\/li\u003e\n\u003cli\u003eLightweight at 0.25 pounds for extended hand use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with the Starrett 79 rule as noted in manufacturer specifications. Suitable as a standard spring-joint outside caliper for general machining, fabrication, and maintenance trade applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eNo power source or special tooling is required for use. Before measuring, confirm the caliper legs are clean and free of burrs that could affect contact accuracy. When transferring a measurement, hold the caliper perpendicular to the workpiece axis to avoid parallax error. Handle the polished steel legs with care to prevent nicks that would compromise measurement contact points.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaliper Type\u003c\/strong\u003e: Outside\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeg Type\u003c\/strong\u003e: Flat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJoint Type\u003c\/strong\u003e: Spring\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\u003eLeg Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Measurement Capacity\u003c\/strong\u003e: 6 inches (150 mm)\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: 0.25 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor Use With\u003c\/strong\u003e: Starrett 79\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 50366\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51544192778546,"sku":"50366","price":109.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/3386977f6a2b8f4e17c7ec619c12a2c4.jpg?v=1785925519","url":"https:\/\/voomisupply.com\/products\/starrett-50366-outside-caliper-spring-joint-6-inch","provider":"Voomi Supply","version":"1.0","type":"link"}