{"id":2479,"date":"2026-10-27T07:30:58","date_gmt":"2026-10-27T04:30:58","guid":{"rendered":"https:\/\/temak.com.tr\/en\/types-of-engineers-squares-applications\/"},"modified":"2026-10-27T07:30:58","modified_gmt":"2026-10-27T04:30:58","slug":"types-of-engineers-squares-applications","status":"publish","type":"post","link":"https:\/\/temak.com.tr\/en\/types-of-engineers-squares-applications\/","title":{"rendered":"The Key to Precision Measurement: Types of Squares and Their Applications"},"content":{"rendered":"<p>In machining, assembly and quality control, verifying the flatness of a part\u2019s surface or the squareness between surfaces is one of the most critical steps. To carry out these checks quickly and reliably, different types of squares designed for specific measuring requirements are used.<\/p>\n<p>In this article, with guidance from <strong>Temak Teknik<\/strong>, we look at the types of squares most commonly used in manufacturing and workshop environments, their functions and how to store them correctly.<\/p>\n<h2>1. Knife-Edge Squares (Light-Gap Inspection Squares)<\/h2>\n<p>Knife-edge squares are high-precision measuring instruments used to check the flatness and 90-degree squareness of precision surfaces using the light-gap method.<\/p>\n<ul>\n<li><strong>Design:<\/strong> The edges are specially ground on both sides to form a fine, knife-like bevelled edge.<\/li>\n<li><strong>Use:<\/strong> The square is placed on the surface to be checked and viewed against the light. Even the smallest surface irregularity or angular deviation is detected instantly by the light passing under the knife edge.<\/li>\n<li><strong>Sizes:<\/strong> Available in various lengths such as 100 mm, 150 mm, 200 mm and 250 mm.<\/li>\n<\/ul>\n<h2>2. Try Squares (Squares with Stock)<\/h2>\n<p>Thanks to the stock (shoulder) at the base, try squares make squareness checks and part alignment considerably easier.<\/p>\n<ul>\n<li><strong>Practical Use:<\/strong> By resting the stock against the reference part, 90-degree squareness can be checked quickly by hand.<\/li>\n<li><strong>Workshop Application:<\/strong> When mounting a vice on a CNC machining centre, vice alignment can be achieved in seconds by using a try square against the T-slots or reference surfaces. This significantly reduces the time spent on setting up with a dial indicator.<\/li>\n<\/ul>\n<h2>3. Fixed-Angle Squares<\/h2>\n<p>These are squares fixed by design at specific standard angles.<\/p>\n<ul>\n<li><strong>Features:<\/strong> They are typically produced at angles that are multiples of 30 and 45 degrees, such as 45\u00b0, 60\u00b0, 120\u00b0, 135\u00b0 and 150\u00b0.<\/li>\n<li><strong>Applications:<\/strong> They are used as reference gauges on production lines where joints or chamfers at specific standard angles are checked.<\/li>\n<\/ul>\n<h2>4. Universal Squares and Protractors<\/h2>\n<p>These are flexible instruments capable of measuring angles to degree-and-minute accuracy.<\/p>\n<ul>\n<li><strong>Vernier and Optical Bevel Protractors:<\/strong> They feature a vernier scale for degree\/minute readings and magnifying lenses that make angle reading easier. They can be set and locked at the required angle.<\/li>\n<li><strong>Simple and Hinged Protractors:<\/strong> These models work on the principle of a protractor to check angles up to 180 degrees. They are widely used for copying and verifying angles in steel construction, metal fabrication and furniture manufacturing.<\/li>\n<\/ul>\n<h2>5. Correct Use and Care of Squares<\/h2>\n<p>Squares are precision inspection instruments, ground and toleranced to international standards. To extend their life and preserve their accuracy in workshop conditions, the following points should be observed:<\/p>\n<ol>\n<li><strong>Do Not Leave Them Loose on the Machine:<\/strong> Avoid placing squares on top of spanners, hammers, workpieces or chip deposits.<\/li>\n<li><strong>Store Them in Their Case:<\/strong> When not in use, keep them in their original wooden case with foam lining to protect them from moisture and impact.<\/li>\n<li><strong>Keep Them Clean:<\/strong> After use, remove any chips and oil residue and protect them against corrosion with a thin protective film of oil.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>A guide to the engineer\u2019s squares most used in machining and workshops: knife-edge, try, fixed-angle squares and protractors, plus care tips.<\/p>\n","protected":false},"author":4,"featured_media":2442,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[76],"tags":[],"class_list":["post-2479","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/temak.com.tr\/en\/wp-json\/wp\/v2\/posts\/2479","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/temak.com.tr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/temak.com.tr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/temak.com.tr\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/temak.com.tr\/en\/wp-json\/wp\/v2\/comments?post=2479"}],"version-history":[{"count":0,"href":"https:\/\/temak.com.tr\/en\/wp-json\/wp\/v2\/posts\/2479\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/temak.com.tr\/en\/wp-json\/wp\/v2\/media\/2442"}],"wp:attachment":[{"href":"https:\/\/temak.com.tr\/en\/wp-json\/wp\/v2\/media?parent=2479"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/temak.com.tr\/en\/wp-json\/wp\/v2\/categories?post=2479"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/temak.com.tr\/en\/wp-json\/wp\/v2\/tags?post=2479"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}