A square is a hand tool used to mark and check right angles, though some variants, such as a mitre square, are built for forty five degree angles instead. It has two parts, a stock and a blade, the stock held against the edge of a workpiece while the blade acts as a straightedge for marking or checking an angle. Squares are used in woodworking, metalworking, construction and technical drawing, and some carry measuring scales or features for calculating angles. Specialized types include the combination square, the framing square, the engineer's square, the try square and the speed square, each suited to a different trade. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Facts
Introduced When (Circa)In use since antiquity, with surviving Ancient Egyptian and Ancient Roman examples; manufactured in factories from the 18th century onward. 1 OriginWooden try squares survive from Ancient Egypt and Ancient Rome; historically made from wood by tradesmen themselves before factory manufacture began. 1 Introduced era (class) Connections
Associated With
Source Square (tool) (Wikipedia)
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1. Square (tool) (Wikipedia)
Wikimedia FoundationHistory section
Wooden try squares have survived from Ancient Egypt and Ancient Rome and can be seen in art from the time.
History section, factory-manufacture sentence
From the 18th century squares began to be manufactured in factories, prior to that they were typically made from wood and were often made by the tradesmen themselves.
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