ROUSSEAU |
France, c.1777, MIM |
Cannon Sundials = P.C., Christie 6/7/72, Ineichen 10/25/75; Sundials in Watch Cases = WRAY, MERC, HAY, Lempertz 6/14/76, McVitty Coll.; Magnetic Sundial = TIM. |
applied for a patent for a cannon sundial in 1777; most of his work is marked "inv. fec."; collection of material is at Chenonceaux. |
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Price 2; Hamilton 1 & 2; RSW. |
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