Square
Of hand tool.
A hand tool consisting of two straight arms at right angles; used to construct or test right angles; "the carpenter who built this room must have lost his square".
This concept's ID is @1~23610
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Of hand tool.
A hand tool consisting of two straight arms at right angles; used to construct or test right angles; "the carpenter who built this room must have lost his square".
This concept's ID is @1~23610