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.

From Seattle Times

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

From The Guardian

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.

From Literature

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

From BBC

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.

From The Guardian