Crossword clues for set square
Wiktionary
n. 1 A flat triangular piece of plastic or other material, having corners of precise angles, used in technical drawing 2 a right angle tool used to determine if two surfaces join at a 90-degree angle, composed of two arms, usually made from metal.
WordNet
n. a try square with an adjustable sliding head
Wikipedia
A set square or triangle ( American English) is an object used in engineering and technical drawing, with the aim of providing a straightedge at a right angle or other particular planar angle to a baseline.
The most simple form of set square is a triangular piece of transparent plastic (or formerly of polished wood) with the centre removed. More commonly the set square bears the markings of a ruler and a half circle protractor. The outer edges are typically bevelled. These set squares come in two usual forms, both right triangles: one with 90-45-45 degree angles, the other with 30-60-90 degree angles. Combining the two forms by placing the hypotenuses together will also yield 15° and 75° angles. They are often purchased in packs with protractors and compasses.
Less commonly found is the adjustable set square. Here, the body of the object is cut in half and rejoined with a hinge marked with angles. Adjustment to the marked angle will produce any desired angle up to a maximum of 180°.
In many European countries, the most common form of set square combines a 90-45-45 triangle with a protractor into a single tool made of clear plastic. Named "Geodreieck" (German for "geometry triangle"), it was originally developed and trademarked by the German manufacturer Aristo-Instrumente Dennert KG (now GEOtec Zeichen- und Kunststofftechnik GmbH) in 1964.
Usage examples of "set square".
Adams pointed dramatically at the river on whose banks were set square frame houses with square windows in which lights now began to gleam.
As they ride westward, toward the town, even from a half-kay away, Lorn can see that the houses are not set square to the road, or to the lanes, but almost haphazardly, with ramshackle outbuildings, and often piles of rubbish within kays of the dwellings.
A thin man in a leather weskit, a black and straightbrim hat set square on his head, a thin rim of whiskers.
She used to say that a girl who knew how to use a set square and protractor would go a long way in life.
It was empty save for a man in overalls asleep on a bench, his head on his folded coat, snoring, and a woman in a calico dress, in a dingy shawl and a new hat trimmed with rigid and moribund flowers set square and awkward on her head.
The roadway they followed entered it through a break in a row of close-set square buildings.
He had his straw hat set square on his head, the rim shading his face.
He was in a decent black suit of clothes, his wig was powdered and set square on his head, his white neckcloth was tied with perfect accuracy, so tight that he could scarcely breathe.