{"product_id":"4-inch-precision-double-square-with-4r-graduations","title":"4 Inch Precision Double Square With 4R Graduations, Pro Grade Accuracy To ±0.002 Inch Over Blade Length, Hardened Stainless Steel Blade, Your Go To Workshop Tool For Machining And Layout","description":"\u003cdiv\u003e4 Inch Precision Double Square with 4R Graduations\n✔️ Blade length options: 4 or 6 inches; ±0.002 in accuracy \u003cp\u003eThese handy double squares are indispensable for setting up machinery and performing a host of shop layout tasks. They are manufactured in accordance with EEC Class 1 accuracy standards and are guaranteed to be square to within 0.002 inch over the length of each blade. They have hardened and tempered no-glare satin chrome stainless steel blades. Blade markings are precision photo etched and then black filled for easy readability. Blades have Quick-Reading 4R markings (1\/64ths and 1\/32nds on one side and 1\/8ths and 1\/16ths on the reverse). Square heads are cast and then precision machined. Square head color is cobalt blue. Square heads lock down tight via locking knob. Squares come in a cardboard box. Available in with either a 4” or 6” blade. Spare blades and locking screws are also available.\u003c\/p\u003e \u003cp\u003eThese 4 inch precision double squares are essential tools for machining and layout in workshops, offering reliable squareness and clear measurement reading for both setup and verification tasks. \u003c\/p\u003e \u003cp\u003e✅ Blade width: 0.728 inch ± 0.01 inch\u003cbr\u003e\n✅ Blade thickness: 0.078 inch ± 0.008 inch\u003cbr\u003e\n✅ Blade groove: 0.86 inch wide and 0.03 inch deep\u003cbr\u003e\n✅ Graduations: Quick Reading 4R (1\/8, 1\/16, 1\/32, 1\/64)\u003cbr\u003e\n✅ Head thickness: 0.472 inch ± 0.02 inch\u003cbr\u003e\n✅ Head width: 0.084 inch ± 0.02 inch\u003cbr\u003e\n✅ Head height: 2.36 inch ± 0.02 inch\u003cbr\u003e\n✅ Blade finish: no-glare satin chrome\u003cbr\u003e\n✅ Head color: cobalt blue; locking knob\u003cbr\u003e\n✅ Packaging: cardboard box\u003cbr\u003e\n✅ Blade length options: 4 inches or 6 inches\u003cbr\u003e\n✅ Spare blades and locking screws available\u003cbr\u003e\u003c\/p\u003e \u003cp\u003e💡 What is a precision double square used for in machining and layout tasks? A precise double square is a handy tool for getting true edges and marking straight, true lines in a shop setting.\n- checks squareness between surfaces and alignment of machine fixtures\n- handy for setting up milling and drilling equipment and marking layouts\n- features 4R graduations and hardened stainless blade for quick, accurate readings\n- locks with a secure knob to maintain alignment during operations\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":48668208300267,"sku":"VXB09NP21FFZ","price":88.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/410mresYHoL.jpg?v=1780361833","url":"https:\/\/vxb.com\/products\/4-inch-precision-double-square-with-4r-graduations","provider":"VXB Bearings","version":"1.0","type":"link"}