{"product_id":"spi-13-376-9-combination-square-set-12-inches-4-piece","title":"Spi 13-376-9 Combination Square Set 12 Inches 4 Piece","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SPI 13-376-9 is a 4-piece combination square set built for layout, inspection, and measurement work across trade and industrial applications. The set includes a 12-inch hardened steel blade graduated in both English and metric units, along with three interchangeable heads: a square head, a center head, and a protractor head. Graduation increments of 0.02 inch, 0.03 inch, 0.5 inch, and 1 mm give technicians precise reference points for scribing, angle setting, and center finding. The hardened steel construction on both the blade and heads resists wear during repeated use in shop and field conditions.\u003c\/p\u003e\u003cp\u003eThis combination square set suits machinists, pipefitters, fabricators, and general tradespeople who need a versatile layout tool. The 12-inch blade length handles standard stock and structural work. The interchangeable head system — square, center, and protractor — covers the most common measurement and marking tasks without switching to multiple separate tools. The English and metric dual graduation makes it practical for work that references either measurement standard.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e12-inch hardened steel blade with English and metric dual graduation\u003c\/li\u003e\n\u003cli\u003eThree head types included: square head, center head, and protractor head\u003c\/li\u003e\n\u003cli\u003eGraduation increments: 0.02 inch, 0.03 inch, 0.5 inch, and 1 mm\u003c\/li\u003e\n\u003cli\u003eHardened steel blade and head construction for durability and wear resistance\u003c\/li\u003e\n\u003cli\u003e4-piece set covers layout, angle measurement, and center-finding tasks\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose combination square set suitable for use in machine shop, fabrication, and field layout applications where a 12-inch blade with interchangeable heads is required.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eNo installation is required for this hand tool. Before use, inspect the blade lock mechanism on each head to confirm the blade is fully secured before scribing or measuring. Keep the blade and head contact surfaces clean and free of debris to maintain measurement accuracy. Store the set in a dry location to prevent corrosion on the hardened steel components.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Pieces\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlade Length\u003c\/strong\u003e: 12 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGraduation Style\u003c\/strong\u003e: English and Metric\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGraduation Increments\u003c\/strong\u003e: 0.02 inch, 0.03 inch, 0.5 inch, 1 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Types\u003c\/strong\u003e: Square, Center, Protractor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlade Material\u003c\/strong\u003e: Hardened Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Material\u003c\/strong\u003e: Hardened Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 3.25 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: 13-376-9\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51689432908082,"sku":"13-376-9","price":108.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5d0d44451433fba9723479318a61fd7e.jpg?v=1788259431","url":"https:\/\/voomisupply.com\/products\/spi-13-376-9-combination-square-set-12-inches-4-piece","provider":"Voomi Supply","version":"1.0","type":"link"}