Mahogany and brass sextant.

Made:
1785-1795 in St Paul's Churchyard
maker:
Peter Dollond
Mahogany framed sextant with brass index arm and scale

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Mahogany framed sextant with brass index arm and scale
Science Museum Group
© The Board of Trustees of the Science Museum

Mahogany framed sextant with brass index arm and scale, wooden handle, with two inlaid ivory maker plates on the crosspiece, by Peter Dollond, London, 1785-1795. Consists of 131° polished scale (-3° to 150°) with 20’ divisions and brass vernier, three filter shades (two red, one green). Fitted with threaded telescope bracket for telescope (125 mm, object glass missing) with a shaded eyepiece and scale magnifier (singe lens) on a 40 mm swivelling arm.

Details

Category:
Astronomy
Object Number:
1938-716
Materials:
mahogany (wood), copper (alloy), ivory and glass
Measurements:
overall: 293 mm x 345 mm x 90 mm, , 1.04kg
type:
sextant
credit:
Mr Thomas H. Court