Brass quadrant of 18-inch radius on a tripod stand

Made:
1780-1820 in London
maker:
Peter Dollond and George Dollond

Brass quadrant of 18-inch radius on a tripod stand, with levelling screws and two telescopes.

Details

Category:
Astronomy
Object Number:
1900-140
Materials:
brass and steel
Measurements:
overall: 1000 x 600 x 600 mm
type:
quadrant - optical
credit:
The Royal Society

Parts

Brass quadrant of 18-inch radius on a tripod stand, with levelling screws and two telescopes.

Brass quadrant of 18-inch radius on a tripod stand

Brass quadrant of 18-inch radius on a tripod stand, with levelling screws and two telescopes.

Measurements:
overall: 1000 x 600 x 600 mm, 29.2kg
Materials:
brass (copper, zinc alloy) and steel (metal)
Object Number:
1900-140/1
type:
quadrant - optical

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