99th Auction
2019/5/11
Lot 158
French, 102 x 102 mm, 307 g, circa 1700
A rare equatorial sun dial with original gold-tooled leather box
Case: brass, firegilt, adjustable feet. Dial: silvered.
The geographic latitude of the observation point is set to the quarter-circle on the side. In connection with the magnetic compass the instrument is aligned to the north-south direction. The sun hand projects the position of the sun on the dial engraved with Arabic numbers. One is getting the true local time.
The fine leather case lined with blue silk shows a crowned emblem with the Aesculapian staff and the signature "G.G.B.D.
A rare equatorial sun dial with original gold-tooled leather box
Case: brass, firegilt, adjustable feet. Dial: silvered.
The geographic latitude of the observation point is set to the quarter-circle on the side. In connection with the magnetic compass the instrument is aligned to the north-south direction. The sun hand projects the position of the sun on the dial engraved with Arabic numbers. One is getting the true local time.
The fine leather case lined with blue silk shows a crowned emblem with the Aesculapian staff and the signature "G.G.B.D.
estimated
1.500—2.000 €
Price realized
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