- a thin flat piece of plastic, metal, etc, in the shape of a right-angled triangle, used in technical drawing
Examples from the Web for set square
Historical Examples of set square
For this purpose a tee-square and set-square are required, together with a pair of spring dividers and a sharply-pointed HB.
Then the margins at the top and the two sides must be marked out, and the upright lines drawn in by means of the set-square.
And it is important that you should get these straight-edges at a true right angle, testing them carefully with the set-square.Stained Glass Work
C. W. Whall