John Locke (1792-1856) was a graduate of Yale College; a surgeon in the U.S. Navy; a chemist and geologist; an educator who established schools for girls in Lexington, Ky., and Cincinnati, Ohio; and an inventor. This is the patent model for his surveyor’s transit.
Ref: John Locke, “Surveyor’s Transit,” U.S. Patent 7,510 (July 16, 1850).
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