Artificial glass horizon.

Artificial glass horizon in circular fitted wooden case with lid, made by unknown German maker (possibly G.F. Brander, Augsburg?), 1785-1795. Consisting of a circular lacquered brass container with three levelling feet, which holds spirit, covered by a transparent glass plate. When in use, the vessel is filled with spirit leaving an air-gap under the glass to act as a bubble level, which is centred with levelling screws.

Details

Category:
Astronomy
Object Number:
1986-634
Materials:
brass, glass and fruitwood
type:
artificial horizon - glass
credit:
Christie's South Kensington Limited