{"title":"Squares \u0026 Cylinder Squares","description":"\u003cp\u003eCylinder squares and precision squares from Suburban Tool give machinists and QC\/inspection teams a true 90-degree reference for checking squareness and setting up work. Made in USA, our master squares and granite cylinder squares hold exacting geometry so you can verify perpendicularity on the surface plate with confidence.\u003c\/p\u003e\u003cp\u003eThis category brings together the full range of squareness references and comparators:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGranite and steel cylinder squares\u003c\/li\u003e\n\u003cli\u003eMaster squares (CS and MCS series)\u003c\/li\u003e\n\u003cli\u003eMagnetic cylinder squares\u003c\/li\u003e\n\u003cli\u003eTaft-Peirce precision squares and squareness comparators\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you are inspecting a fixture, qualifying a machine, or performing a squareness comparison, browse and filter by type, size, or brand to find the cylinder square or master square that delivers the reference accuracy your inspection and setup work require.\u003c\/p\u003e","products":[{"product_id":"mcs-4-magnetic-cylinder-squares","title":"Magnetic Cylinder Square, 4\" (MCS-4)","description":"\u003cp\u003eThe MCS-4 magnetic cylinder square from Suburban Tool stands 4-1\/4 inches tall on a compact 1-7\/16 inch magnetic base, giving toolmakers a quick, accurate way to check squareness, parallelism, concentricity, and runout on component parts. The magnetic base eliminates clamping distortion and speeds set-up on the surface plate.\u003c\/p\u003e\u003cp\u003eManufactured from steel selected and normalized for stability and uniformity, its base is perpendicular to the shaft within 0.0001 inch over the length of the square.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMagnetic base eliminates clamping distortion and speeds inspection set-up\u003c\/li\u003e\n\u003cli\u003eChecks squareness, parallelism, concentricity, and runout in one fixture\u003c\/li\u003e\n\u003cli\u003eNormalized steel construction for long-term stability and uniformity\u003c\/li\u003e\n\u003cli\u003eIncludes a fitted wooden storage case and a form showing advertised sizes and tolerances\u003c\/li\u003e\n\u003cli\u003eMade in the USA by Suburban Tool\u003c\/li\u003e\n\u003cli\u003eIncludes fitted wooden storage case.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c!-- st-notes --\u003e\u003cp\u003eAvailable with No Certification, Short Form, or Long Form Certification.\u003c\/p\u003e","brand":"Suburban Tool Inc.","offers":[{"title":"Default Title","offer_id":47081439428760,"sku":"MCS-4","price":668.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/7412\/7768\/files\/MCS-6_20and_20MCS-4_20Magnetic_20Cylinder_20Squares_12da52d9-7bc2-46e9-88f1-5d1e26c1dabb.jpg?v=1781027667"},{"product_id":"mcs-6-magnetic-cylinder-squares","title":"Magnetic Cylinder Square, 6\" (MCS-6)","description":"\u003cp\u003eThe MCS-6 magnetic cylinder square from Suburban Tool stands 6-1\/2 inches tall on a 3-3\/8 inch magnetic base, giving inspectors a fast, accurate way to check squareness, parallelism, concentricity, and runout on component parts. The magnetic base eliminates clamping distortion and speeds set-up on the surface plate or grinder.\u003c\/p\u003e\u003cp\u003eManufactured from steel selected and normalized for stability and uniformity, its base is perpendicular to the shaft within 0.0001 inch over the length of the square.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMagnetic base eliminates clamping distortion and speeds inspection set-up\u003c\/li\u003e\n\u003cli\u003eChecks squareness, parallelism, concentricity, and runout in one fixture\u003c\/li\u003e\n\u003cli\u003eNormalized steel construction for long-term stability and uniformity\u003c\/li\u003e\n\u003cli\u003eIncludes a fitted wooden storage case and a form showing advertised sizes and tolerances\u003c\/li\u003e\n\u003cli\u003eMade in the USA by Suburban Tool\u003c\/li\u003e\n\u003cli\u003eIncludes fitted wooden storage case.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c!-- st-notes --\u003e\u003cp\u003eAvailable with No Certification, Short Form, or Long Form Certification.\u003c\/p\u003e","brand":"Suburban Tool Inc.","offers":[{"title":"Default Title","offer_id":47081439592600,"sku":"MCS-6","price":788.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/7412\/7768\/files\/MCS-6_20and_20MCS-4_20Magnetic_20Cylinder_20Squares_0fc95174-8750-4758-9656-908ee7ba2d15.jpg?v=1781027670"},{"product_id":"mcs-12-magnetic-cylinder-square","title":"Magnetic Cylinder Square, 12\" (MCS-12)","description":"\u003cp\u003eThe MCS-12 magnetic cylinder square from Suburban Tool stands 13-1\/2 inches tall on a 6-inch magnetic base, giving inspectors a fast, accurate way to check squareness, parallelism, concentricity, and runout on component parts. The magnetic base eliminates clamping distortion and speeds set-up on the surface plate or grinder.\u003c\/p\u003e\u003cp\u003eManufactured from steel selected and normalized for stability and uniformity, its base is perpendicular to the shaft within 0.0003 inch over the length of the square.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMagnetic base eliminates clamping distortion and speeds inspection set-up\u003c\/li\u003e\n\u003cli\u003eChecks squareness, parallelism, concentricity, and runout in one fixture\u003c\/li\u003e\n\u003cli\u003eNormalized steel construction for long-term stability and uniformity\u003c\/li\u003e\n\u003cli\u003eIncludes a fitted wooden storage case and a form showing advertised sizes and tolerances\u003c\/li\u003e\n\u003cli\u003eMade in the USA by Suburban Tool\u003c\/li\u003e\n\u003cli\u003eIncludes fitted wooden storage case.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c!-- st-notes --\u003e\u003cp\u003eAvailable with No Certification, Short Form, or Long Form Certification.\u003c\/p\u003e","brand":"Suburban Tool Inc.","offers":[{"title":"Default Title","offer_id":47081445916824,"sku":"MCS-12","price":3151.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/7412\/7768\/files\/MCS-6_20and_20MCS-4_20Magnetic_20Cylinder_20Squares.jpg?v=1781027664"},{"product_id":"cs-6-cylinder-square-3-inch-diameter-precision","title":"Square (CS-6)","description":"\u003cp\u003eThe CS-6 steel cylinder square from Suburban Tool is a 3-inch diameter, 6-inch tall one-piece hardened square that gives machinists and QC inspectors an excellent 90-degree reference. Solid steel construction, heat treated and precision ground, keeps it stable for checking squareness on the surface plate or in the toolroom.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSolid, one-piece steel construction, heat treated and precision ground for lasting stability\u003c\/li\u003e\n\u003cli\u003eCylinder ends lapped square to the outside diameter for a dependable 90-degree reference\u003c\/li\u003e\n\u003cli\u003eIdeal for squareness inspection, layout, and setup verification\u003c\/li\u003e\n\u003cli\u003eShips in a fitted wooden case with a form showing the advertised sizes and tolerances\u003c\/li\u003e\n\u003cli\u003eMade in the USA by Suburban Tool\u003c\/li\u003e\n\u003cli\u003eIncludes a fitted, wooden case.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c!-- st-notes --\u003e","brand":"Suburban Tool Inc.","offers":[{"title":"Default Title","offer_id":48703595380888,"sku":"CS-6","price":543.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/7412\/7768\/files\/CS-6_20Six_20Inch_20Cylinder_20Square_f73352f6-8878-40d9-9bbb-265225ba23ca.jpg?v=1781026887"},{"product_id":"cs-12-cylinder-square-4-inch-diameter-precision","title":"Square (CS-12)","description":"\u003cp\u003eThe CS-12 steel cylinder square from Suburban Tool is a 4-inch diameter, 12-inch tall one-piece hardened square that gives toolmakers and QC inspectors an excellent 90-degree reference. Solid steel construction, heat treated and precision ground, makes it a stable master for checking squareness in the toolroom and on the surface plate.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSolid, one-piece steel construction, heat treated and precision ground for lasting stability\u003c\/li\u003e\n\u003cli\u003eCylinder ends lapped square to the outside diameter for a dependable 90-degree reference\u003c\/li\u003e\n\u003cli\u003eIdeal for squareness inspection, layout, and setup verification\u003c\/li\u003e\n\u003cli\u003eShips in a fitted wooden case with a form showing the advertised sizes and tolerances\u003c\/li\u003e\n\u003cli\u003eMade in the USA by Suburban Tool\u003c\/li\u003e\n\u003cli\u003eIncludes a fitted, wooden case.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c!-- st-notes --\u003e","brand":"Suburban Tool Inc.","offers":[{"title":"Default Title","offer_id":48703595413656,"sku":"CS-12","price":985.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/7412\/7768\/files\/CS-6_20Six_20Inch_20Cylinder_20Square.jpg?v=1781026881"},{"product_id":"taft-peirce-square-9141","title":"Taft-Peirce Square (9141)","description":"\u003cp\u003eThe Taft-Peirce 9141 precision square from Suburban Tool is a toolroom master square built for machinists and QC inspectors who demand a true 90-degree reference. Model 9141 carries the squareness reputation Taft-Peirce has earned across generations of precision layout and inspection.\u003c\/p\u003e\u003cp\u003eReach for the 9141 whenever you need to verify perpendicularity, set up angle plates, or check parts against the surface plate.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTrusted Taft-Peirce squareness for inspection and layout\u003c\/li\u003e\n\u003cli\u003ePrecision-ground reference faces for a reliable right angle\u003c\/li\u003e\n\u003cli\u003eIdeal for QC benches, toolroom, and surface-plate setups\u003c\/li\u003e\n\u003cli\u003eRugged build that holds up to daily machine-shop use\u003c\/li\u003e\n\u003cli\u003eBacked by Suburban Tool's precision-tooling expertise\u003c\/li\u003e\n\u003cli\u003eMade in the USA by Suburban Tool\u003c\/li\u003e\n\u003cli\u003eSupplied in a finished wood case with hinged cover.\u003c\/li\u003e\n\u003cli\u003ePeriphery is ground between centers, straight and round within the tolerance specified for each size, with an extremely fine micro finish.\u003c\/li\u003e\n\u003cli\u003eRecessed ends, provided with self-cleaning dirt grooves, are ground and lapped square with the axis.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c!-- st-feat --\u003e\u003c!-- st-notes --\u003e","brand":"Suburban Tool Inc.","offers":[{"title":"Default Title","offer_id":49215436423320,"sku":"9141","price":1876.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/7412\/7768\/files\/9143-12_20Cylinder_20Square.jpg?v=1781104221"},{"product_id":"taft-peirce-square-9143-12","title":"Taft-Peirce Square (9143-12)","description":"\u003cp\u003eThe Taft-Peirce 9143-12 precision square from Suburban Tool gives toolmakers and inspectors a rigid, reliable 90-degree reference for the shop floor. Model 9143-12 continues the proven Taft-Peirce square design trusted for accurate layout and inspection.\u003c\/p\u003e\u003cp\u003eUse the 9143-12 to check perpendicularity, square up workholding, and verify parts on the surface plate.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eProven Taft-Peirce squareness for repeatable inspection\u003c\/li\u003e\n\u003cli\u003ePrecision-ground working faces for a dependable right angle\u003c\/li\u003e\n\u003cli\u003eWell suited to layout, QC, and toolroom setups\u003c\/li\u003e\n\u003cli\u003eSolid construction engineered for everyday machine-shop duty\u003c\/li\u003e\n\u003cli\u003eSupported by Suburban Tool's precision-tooling heritage\u003c\/li\u003e\n\u003cli\u003eMade in the USA by Suburban Tool\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Suburban Tool Inc.","offers":[{"title":"Default Title","offer_id":49215436718232,"sku":"9143-12","price":6187.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/7412\/7768\/files\/9143-12_20Cylinder_20Square_9e214975-ae2b-4816-b0ca-945eca2c4af3.jpg?v=1781104226"},{"product_id":"taft-peirce-square-9143-24","title":"Taft-Peirce Square (9143-24)","description":"\u003cp\u003eThe Taft-Peirce 9143-24 precision square from Suburban Tool delivers a dependable 90-degree reference for larger inspection and layout work. Model 9143-24 extends the trusted Taft-Peirce square line with the reach machinists need for taller parts and setups.\u003c\/p\u003e\u003cp\u003ePut the 9143-24 to work checking perpendicularity, aligning workholding, and inspecting components on the surface plate.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTrusted Taft-Peirce squareness scaled for larger work\u003c\/li\u003e\n\u003cli\u003ePrecision-ground faces for an accurate, repeatable right angle\u003c\/li\u003e\n\u003cli\u003eIdeal for QC, layout, and toolroom inspection\u003c\/li\u003e\n\u003cli\u003eRigid construction built for demanding machine-shop use\u003c\/li\u003e\n\u003cli\u003eBacked by Suburban Tool's precision-tooling expertise\u003c\/li\u003e\n\u003cli\u003eMade in the USA by Suburban Tool\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Suburban Tool Inc.","offers":[{"title":"Default Title","offer_id":49215436882072,"sku":"9143-24","price":18014.85,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/7412\/7768\/files\/9143-12_20Cylinder_20Square_fb82d2da-e6b3-44b5-b826-a3a0217d2ec2.jpg?v=1781104231"},{"product_id":"taft-peirce-square-9143-36","title":"Taft-Peirce Square (9143-36)","description":"\u003cp\u003eThe Taft-Peirce 9143-36 precision square from Suburban Tool gives inspectors and toolmakers a tall, rigid 90-degree reference for large-part work. Model 9143-36 brings the proven Taft-Peirce square design to the biggest layout and inspection jobs on the floor.\u003c\/p\u003e\u003cp\u003eRely on the 9143-36 to verify perpendicularity, square up tall setups, and inspect components against the surface plate.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTrusted Taft-Peirce squareness for large-scale inspection\u003c\/li\u003e\n\u003cli\u003ePrecision-ground working faces for a reliable right angle\u003c\/li\u003e\n\u003cli\u003eBuilt for layout, QC, and demanding toolroom setups\u003c\/li\u003e\n\u003cli\u003eRigid construction that holds true under daily shop use\u003c\/li\u003e\n\u003cli\u003eSupported by Suburban Tool's precision-tooling heritage\u003c\/li\u003e\n\u003cli\u003eMade in the USA by Suburban Tool\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Suburban Tool Inc.","offers":[{"title":"Default Title","offer_id":49215437471896,"sku":"9143-36","price":21129.15,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/7412\/7768\/files\/9143-12_20Cylinder_20Square_e2c29c72-6a17-4320-9aaf-f1b6e133dc34.jpg?v=1781104235"},{"product_id":"taft-peirce-square-3-1-2-5","title":"Taft-Peirce Square, 3-1\/2\" × 5\" (9146)","description":"\u003cp\u003eThe Taft-Peirce 9146 precision square, 3-1\/2\" x 5\", from Suburban Tool is a compact master square built for close-in inspection and small-part layout. Model 9146 puts a true 90-degree reference right at the bench for machinists and QC inspectors.\u003c\/p\u003e\u003cp\u003eReach for the 3-1\/2\" x 5\" 9146 to verify perpendicularity, square up small setups, and check parts on the surface plate.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompact 3-1\/2\" x 5\" Taft-Peirce squareness for tight work\u003c\/li\u003e\n\u003cli\u003ePrecision-ground faces for a reliable right angle\u003c\/li\u003e\n\u003cli\u003ePerfect for bench inspection, layout, and toolroom use\u003c\/li\u003e\n\u003cli\u003eSolid construction sized for handheld convenience\u003c\/li\u003e\n\u003cli\u003eSupported by Suburban Tool's precision-tooling heritage\u003c\/li\u003e\n\u003cli\u003eMade in the USA by Suburban Tool\u003c\/li\u003e\n\u003cli\u003eComes complete with indicator in a finished wooden case with hinged cover.\u003c\/li\u003e\n\u003cli\u003eColumn made of hardened stainless steel, 11-1\/16\" x 1-1\/4\" diameter.\u003c\/li\u003e\n\u003cli\u003eIndicator bracket made of seasoned cast iron, with a slot that allows 1\/8\" horizontal adjustment of the indicator.\u003c\/li\u003e\n\u003cli\u003e1-11\/16\" diameter AGD Group 1 dial indicator with adjustable bracket-type back, 0.0001\" graduations \u0026amp; 0.025\" range with 0-5-0 reading dial.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c!-- st-feat --\u003e\u003c!-- st-notes --\u003e","brand":"Suburban Tool Inc.","offers":[{"title":"Default Title","offer_id":49215438323864,"sku":"9146","price":4132.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/7412\/7768\/files\/9146_20Comparator_20Square.jpg?v=1781104240"},{"product_id":"taft-peirce-square-24-40","title":"Taft-Peirce Square, 24\" × 40\" (9314-S)","description":"\u003cp\u003eThe Taft-Peirce 9314-S precision square, 24\" x 40\", from Suburban Tool is a large-format master square built for heavy inspection and layout work. Model 9314-S gives QC teams and toolmakers a substantial 90-degree reference where big parts and tall setups are the norm.\u003c\/p\u003e\u003cp\u003eUse the 24\" x 40\" 9314-S to check perpendicularity, square up large workholding, and inspect components on the surface plate.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLarge 24\" x 40\" Taft-Peirce squareness for big-part work\u003c\/li\u003e\n\u003cli\u003ePrecision-ground faces for a dependable right angle\u003c\/li\u003e\n\u003cli\u003eIdeal for heavy inspection, layout, and toolroom setups\u003c\/li\u003e\n\u003cli\u003eRobust construction engineered for demanding shop duty\u003c\/li\u003e\n\u003cli\u003eBacked by Suburban Tool's precision-tooling expertise\u003c\/li\u003e\n\u003cli\u003eMade in the USA by Suburban Tool\u003c\/li\u003e\n\u003cli\u003eMade from class 35-40 cast iron.\u003c\/li\u003e\n\u003cli\u003eTolerances of all working surfaces are held square to one another within 0.0003\" overall.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c!-- st-feat --\u003e","brand":"Suburban Tool Inc.","offers":[{"title":"Default Title","offer_id":49215440617624,"sku":"9314-S","price":19165.65,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/7412\/7768\/files\/9314-S_20Three-Axis_20Reference_20Square.jpg?v=1781104256"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/7412\/7768\/collections\/9314-S_20Three-Axis_20Reference_20Square_24b28773-5275-483c-8991-ba5e8405485a.jpg?v=1791206750","url":"https:\/\/www.subtool.com\/collections\/squares.oembed","provider":"Suburban Tool Inc,","version":"1.0","type":"link"}