set square

noun

1. a thin flat piece of plastic, metal, etc, in the shape of a right-angled triangle, used in technical drawing

Example Sentences

The Jets improved to 4-0 this season against Ottawa, with the teams set square off again Saturday night.

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Anally retentive bakers who test their brownies against a set square and make cupcakes with a compass?

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He had a way of looking straight at the person he was talking to, his shoulders set square, his hands on his knees, his eyes unwavering, that always struck others as honest and open.

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He is depicted on his tomb with his tools - a set square and a plumb line.

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The symbolism of the stonemason is still widespread in freemasonry, with set square and compasses frequently appearing on aprons and other ornaments, often with the addition of an "all-seeing" eye.

Read more on The Guardian