standard medium size.
Introduction
A set square is a clear plastic drawing instrument used to draw lines at the given angle of the particular square and right angle lines.
How to use it
Place the set square on straight edge, such as a tee square, and run your pencil along the 45o, 60o or 90o edges.
Where to use it
Wherever lines are required at 45o, 60o or 90o as in sectioning.
Maintenance
None
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