What is an old instrument used for taking altitudes; -- called also geometrical square, and line of shadows called?
quadrat — An old instrument used for taking altitudes; -- called also geometrical square, and line of shadows. (Webster's 1913.)
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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- Published: 2026-07-17 · Modified: 2026-07-17