The Collaborative International Dictionary
geometrical square
Quadrat \Quad"rat\, n. [F. quadrat, cadrat. See Quadrate.]
(Print.) A block of type metal lower than the letters, -- used in spacing and in blank lines. [Abbrev. quad.]
An old instrument used for taking altitudes; -- called also geometrical square, and line of shadows.
Usage examples of "geometrical square".
Cairo came up at us marked by the geometrical square of the pyramid at Giza.