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Signature	Maker	Instruments	Comments	Location	References
BERTHOUD, FERDINAND	Switzerland; France, 1729-1807, MIM NIM	Tide Timer, 1788 = AMST; Celestial Globe on clock = Hertford House, London.		Paris.	USNM; Mörzer Bruyns 1; Grimaldi (975); Cajori; J.A, Bennett 2.
BERTHOUD, FERDINAND	Switzerland; France, 1729-1807, MIM NIM	Tide Timer, 1788 = AMST; Celestial Globe on clock = Hertford House, London.		Paris.	USNM; Mörzer Bruyns 1; Grimaldi (975); Cajori; J.A, Bennett 2.

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