Webster Signature Database - Suggest Correction

Signature Maker Instruments Comments Location References
HADLEY, JOHN England, 1682-1744, designed a telescope, 1719-20; best known for his invention of the relecting quadrant (octant) in 1731, for which he received a patent in 1734 which ran until 1745; a similar instrument was independently invented, about the same time, by Thomas Godrey 1 in Philadelphia, Pa.; Hadley licensed Joseph Jackson 1 to be the sole maker; designed a bubble level in 1734. Enfield Chase near East Barnet. Taylor 1(538); Taylor 2(56); DNB; DSB; USNM; Bedini 8; G.L'E. Turner 24; A.J. Turner 10; Millburn 8.

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