{"product_id":"spi-13-271-2-combination-square-set-24-inches-3-piece","title":"Spi 13-271-2 Combination Square Set 24 Inches 3 Piece","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SPI 13-271-2 is a 3-piece combination square set built for precise layout and measurement work in the field or shop. The set includes a 24-inch hardened steel blade and a cast iron center square head, delivering the rigidity and accuracy that trade professionals expect. Graduation follows the 4R system, providing four reading scales: 1\/16, 1\/32, 1\/64, and 1\/8 inch. This set is suited for machinists, pipefitters, sheet metal workers, and other tradespeople who require reliable, repeatable linear and angular measurements across a range of layout tasks.\u003c\/p\u003e\u003cp\u003eThis combination square set is designed for professional use in industrial, mechanical, and construction trade environments. It handles common layout operations including marking 90-degree and 45-degree angles, scribing lines, checking flatness, and measuring depth or height. The cast iron center square head provides stable clamping and consistent registration against a workpiece edge. At 24 inches, the blade length supports layout work on larger stock or structural components where shorter rules fall short.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e24-inch hardened steel blade resists wear and maintains accuracy under repeated use\u003c\/li\u003e\n\u003cli\u003eCast iron center square head for durable, stable head-to-blade clamping\u003c\/li\u003e\n\u003cli\u003e4R graduation system: 1\/16, 1\/32, 1\/64, and 1\/8 inch scales on a single blade\u003c\/li\u003e\n\u003cli\u003e3-piece set supports multiple measurement and layout configurations\u003c\/li\u003e\n\u003cli\u003eBlade length suits large-format layout work on structural or sheet material\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard combination square set for professional layout and measurement applications in mechanical, machining, and trade service environments.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eCombination square sets do not require installation, but proper use and storage affect long-term accuracy. Keep the blade and head free of chips and debris before clamping to a workpiece to ensure square registration. Inspect the blade for straightness and verify head-lock tightness before critical layout work. Store the set protected from impacts that could damage the cast iron head or bow the blade.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Pieces\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlade Length\u003c\/strong\u003e: 24 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGraduation Style\u003c\/strong\u003e: 4R\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGraduation Scales\u003c\/strong\u003e: 1\/16 inch, 1\/32 inch, 1\/64 inch, 1\/8 inch\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: Cast Iron\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Type\u003c\/strong\u003e: Center Square\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 4.8 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: 13-271-2\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51692060508466,"sku":"13-271-2","price":218.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/44214fb87cb255ecb48ce0f61c8dd231.jpg?v=1788292519","url":"https:\/\/voomisupply.com\/products\/spi-13-271-2-combination-square-set-24-inches-3-piece","provider":"Voomi Supply","version":"1.0","type":"link"}