{"product_id":"starrett-56390-combination-square-set-4-inch-2-piece","title":"Starrett 56390 Combination Square Set 4 Inch 2 Piece","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe STARRETT 56390 is a 2-piece combination square set built for layout, measuring, and marking tasks in the field or shop. The set includes a 4-inch steel blade and a forged steel square head, delivering the rigidity and precision that trade professionals expect from a hand-measuring tool. The blade uses 4R graduation, marked in 1\/16, 1\/32, and 1\/64 inch increments alongside 1\/8-inch divisions, giving the user fine resolution across a compact 4-inch range. At 0.25 pounds, the set is lightweight and easy to carry to a job site. Licensed tradespeople and skilled tradespeople working in HVAC, plumbing, electrical, or general construction use this type of tool for scribing, checking squareness, and transferring measurements.\u003c\/p\u003e\n\u003cp\u003eThe STARRETT 56390 suits residential and light commercial trade applications where a compact, accurate layout square is needed. The 4-inch blade length makes it well suited for confined spaces and detail work. The forged steel square head locks onto the blade and provides a reliable 90-degree reference. This set is appropriate for any trade professional who needs a durable, job-site-ready measuring tool for marking cut lines, verifying square corners, or setting depth references on small workpieces.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-inch steel blade with 4R graduation in 1\/64, 1\/32, 1\/16, and 1\/8 inch increments\u003c\/li\u003e\n  \u003cli\u003eForged steel square head for durability and accurate 90-degree reference\u003c\/li\u003e\n  \u003cli\u003e2-piece set includes blade and square head\u003c\/li\u003e\n  \u003cli\u003eCompact 4-inch blade length suited for detail work and confined spaces\u003c\/li\u003e\n  \u003cli\u003eLightweight at 0.25 pounds for easy carry and one-hand use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard combination square set suitable for general trade layout and measuring applications across HVAC, plumbing, electrical, and construction disciplines.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eNo power source or shutoff is required for this hand tool. Ensure the blade is fully seated and the head lock is secure before taking a measurement to prevent slippage and inaccurate readings. Clean blade graduations regularly to maintain legibility in dusty or oily job-site conditions. Store the set protected from moisture to prevent corrosion on the steel blade and head.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Pieces\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlade Length\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGraduation Style\u003c\/strong\u003e: 4R\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGraduation (Inch)\u003c\/strong\u003e: 1\/64 inch, 1\/32 inch, 1\/16 inch, 1\/8 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Type\u003c\/strong\u003e: Square\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlade Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Material\u003c\/strong\u003e: Forged Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.25 pounds\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: STARRETT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 56390\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51540832223538,"sku":"56390","price":171.02,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1a5dc38c3e42b8b208997ff6f2a62b4c.jpg?v=1785864461","url":"https:\/\/voomisupply.com\/products\/starrett-56390-combination-square-set-4-inch-2-piece","provider":"Voomi Supply","version":"1.0","type":"link"}