{"product_id":"spi-13-840-4-steel-rule-6-inch-3r-rigid","title":"Spi 13-840-4 Steel Rule 6 Inch 3R Rigid","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 13-840-4 is a rigid steel rule designed for precise linear measurement in trade and industrial settings. Finished in satin chrome plating, the 6-inch rule offers clear readability with three graduation scales: 1\/32 inch, 1\/50 inch, and 1\/64 inch. The 3R graduation style presents markings on one side with three rows of increments, giving technicians multiple resolution options on a single tool. At 0.0400 inches thick and 3\/4 inch wide, this rule is built for consistent, repeatable reads in layout, fabrication, and inspection work.\u003c\/p\u003e\n\u003cp\u003eThis rule suits HVAC technicians, pipefitters, plumbers, electricians, and sheet metal workers who need a compact, dependable measuring tool on the job. The 6-inch length is practical for close-tolerance work in tight spaces, panel layouts, and component measurements. The rigid construction prevents flex-induced read errors, making it a reliable choice for bench work and field service alike.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eThree graduation scales: 1\/32 inch, 1\/50 inch, and 1\/64 inch on a single rule\u003c\/li\u003e\n  \u003cli\u003e3R graduation style with horizontal scale orientation for easy reading\u003c\/li\u003e\n  \u003cli\u003eRigid construction eliminates measurement error caused by rule flex\u003c\/li\u003e\n  \u003cli\u003eSatin chrome-plated finish reduces glare and resists corrosion\u003c\/li\u003e\n  \u003cli\u003eCompact 6-inch length suited for tight-space and bench measurement tasks\u003c\/li\u003e\n  \u003cli\u003eNon-magnetic, no hook — clean and straightforward layout tool\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose steel rule for trade and industrial measurement applications requiring 1\/32, 1\/50, or 1\/64 inch resolution.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eNo installation is required for this hand tool. Store the rule in a protective sleeve or tool roll to prevent edge damage and maintain graduation legibility. Wipe clean after use to preserve the satin chrome finish. Inspect graduation markings periodically for wear, especially in high-use fabrication environments.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Satin Chrome-Plated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Silver\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Width\u003c\/strong\u003e: 3\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.0400 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGraduation Scales\u003c\/strong\u003e: 1\/32 inch, 1\/50 inch, 1\/64 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGraduation Style\u003c\/strong\u003e: 3R\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eScale Orientation\u003c\/strong\u003e: Horizontal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexibility\u003c\/strong\u003e: Rigid\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes Hook\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMagnetic\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\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: 13-840-4\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51717359960370,"sku":"13-840-4","price":20.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d0c933be7210e374e0c8c4e3f54bbe4c.jpg?v=1788539094","url":"https:\/\/voomisupply.com\/products\/spi-13-840-4-steel-rule-6-inch-3r-rigid","provider":"Voomi Supply","version":"1.0","type":"link"}