Compass and Sundial combined

Made:
1731-1776 in London
maker:
James Ferguson
Azimuth compass sundial by James Ferguson, London, England

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Azimuth compass sundial by James Ferguson, London, England
Science Museum Group
© The Board of Trustees of the Science Museum

Azimuth compass sundial by James Ferguson, London, England, 1731-1776. Could also be used as a tablet sundial - string gnomon is missing (see note).

Details

Category:
Time Measurement
Object Number:
1956-230
Materials:
wood (unidentified), glass, brass (copper, zinc alloy), steel (metal) and paper (fibre product)
Measurements:
overall: 28 mm x 126 mm x 147 mm, .37kg
type:
variation compass, magnetic compass, diptych sundial, compass and sundial
credit:
Donated by Mrs Beatrice R Colin-Jones in memory of her father, David Johnson Gadsby, who acquired the compass.