{"product_id":"spi-77-637-7-beveled-straight-edge-96-inches-spring-steel","title":"Spi 77-637-7 Beveled Straight Edge 96 Inches Spring Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 77-637-7 is a precision beveled straight edge designed for high-accuracy layout, inspection, and surface alignment work in machine shops, toolrooms, and fabrication environments. Manufactured from spring steel, this straight edge measures 96 inches in overall length, 3-5\/32 inches wide, and 19\/32 inches thick. It features a single beveled edge ground to an edge flatness of 0.0018 inches (46 micrometers) and a parallelism tolerance of 0.0036 inches (92 micrometers). These tolerances make it suitable for demanding metrology applications where reference-surface accuracy is critical. Machinists, toolmakers, and quality control technicians are the primary users of this tool.\u003c\/p\u003e\n\u003cp\u003eThis straight edge is used in industrial and manufacturing settings for verifying flatness, checking alignment, and scribing reference lines on large workpieces, machine beds, and surface plates. Its 96-inch length makes it particularly well suited for inspecting long surfaces such as lathe beds, mill tables, and large fabricated weldments. The spring steel construction provides rigidity across the full span while resisting permanent deformation under normal handling conditions. It is a hand tool applied without power and is typically used alongside surface plates, feeler gauges, or optical comparators in precision measurement workflows.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e96-inch overall length suitable for inspecting large machine beds and extended flat surfaces\u003c\/li\u003e\n  \u003cli\u003eSpring steel construction provides rigidity and resistance to permanent deformation\u003c\/li\u003e\n  \u003cli\u003eSingle beveled edge ground to 0.0018 inches (46 micrometers) edge flatness\u003c\/li\u003e\n  \u003cli\u003eParallelism tolerance of 0.0036 inches (92 micrometers) for high-accuracy reference work\u003c\/li\u003e\n  \u003cli\u003e3-5\/32 inches wide by 19\/32 inches thick cross-section for stable handling on large spans\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose precision straight edge for use in machine shop, toolroom, and industrial inspection applications requiring a 96-inch reference edge on ferrous or non-ferrous workpieces.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tool requires no installation. Handle with clean, dry gloves to prevent corrosion from skin oils, and store horizontally or vertically in a protected rack to avoid bowing over time. Inspect the reference edge periodically for nicks or burrs that could affect measurement accuracy, and recertify against a known reference surface as required by your quality system. This item weighs 51 pounds and should be lifted by two people or with appropriate material handling equipment.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 96 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Width\u003c\/strong\u003e: 3-5\/32 inches (80.17 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Thickness\u003c\/strong\u003e: 19\/32 inches (15.08 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEdge Flatness\u003c\/strong\u003e: 0.0018 inches (46 micrometers)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism\u003c\/strong\u003e: 0.0036 inches (92 micrometers)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Beveled Edges\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Spring Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 51 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 77-637-7\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51714703032626,"sku":"77-637-7","price":2244.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ac81c79f001117444538549adc40cfdd.jpg?v=1788505101","url":"https:\/\/voomisupply.com\/products\/spi-77-637-7-beveled-straight-edge-96-inches-spring-steel","provider":"Voomi Supply","version":"1.0","type":"link"}