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Sextant with Case and Accessories, by Troughton, London, Later 19th Century

Inventory Number 45880

Acknowledgement: © History of Science Museum, University of Oxford, inv.45880

Subject
Navigation
Item type
Object
Makers
Troughton
Provenance
Presented by Admiral C. E. Monro. Used on the China Station, 1885-90.
Primary inscriptions
"Troughton London" on scale arc; serial number "1002" on vertical strut.
Object type
Sextant
Inventory No
45880
Accession Number
1927-25

Description

Navigator's double T-frame with index and horizon glasses, each with shades; scale divided on platinum; Vernier with clamp, tangent screw, microscope with diffuser glass, and bubble level; 4 sighting tubes; handle; four eyepieces, each with different coloured lenses; and a small screw head. Housed in a hinged, lockable keystone case. Inside the case are supports for the instrument and accessories, and Kew Observatory examination certificates for 1890, 1892, 1894.

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