Square (tool)
A square is a tool used for marking and referencing a 90° angle, though mitre squares are used for 45° angles. Squares see common use in woodworking, metalworking, construction and technical drawing. Some squares incorporate a scale for measuring distances (a ruler) or for calculating angles.
| Classification | Marking and measuring hand tools |
|---|---|
| Types | Combination square Framing square Engineer's square Mitre square Set square Speed square Try square T-square |
| Used with | Pens, pencils, scribes, drawing boards, and plum bobs |
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