Usage of the celestial globes and spheres (1699). Tract on construction and principal usage of mathematical instruments (1709). Description and usage of newly constructed planisphere (1727).
Typical example of this type of sundials, with movable bird gnomon. Sundial is made of silver and is beautifully engraved - with time scale on front side, latitudes of main French / European cities on the backside. Quality piece, as you can expect from good engineer, with deep engraving of excellent quality. The time scales are engraved for latitudes 40, 45, 50 and 55 degrees.
Compass is probably working, arrow is moving, no warranties however. Sundial measures 63 x 62 mm approximately.
Rare item from notable researcher, in good condition - don't miss it. The item "Early XVIII Octagonal Silver Antique Pocket Sundial by NICOLAS BION in PARIS" is in sale since Thursday, August 29, 2019. This item is in the category "Antiques\Maritime\Maritime Compasses".
The seller is "goodoldwatch" and is located in Armentières en Brie. This item can be shipped worldwide.