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Signature	Maker	Instruments	Comments	Location	References
MAGELLAN, JEAN HYACINTHE DE	Portugal; France; England, 1723-90, NIM	Repeating Circle = NMM.	invented a type of repeating circle; made Gowin Knight's compasses with George Adams 2; took out a patent for an improvement for the barometer with Henry Pyefinch in 1765; agent for some London instrument makers; F.R.S.	Paris; London (by 1765).	Taylor 2(378); DNB; Middleton 1; A.J. Turner 10; RSW.
MAGELLAN, JEAN HYACINTHE DE	Portugal; France; England, 1723-90, NIM	Repeating Circle = NMM.	invented a type of repeating circle; made Gowin Knight's compasses with George Adams 2; took out a patent for an improvement for the barometer with Henry Pyefinch in 1765; agent for some London instrument makers; F.R.S.	Paris; London (by 1765).	Taylor 2(378); DNB; Middleton 1; A.J. Turner 10; RSW.

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