Brass oval-pattern frame sextant.

Made:
1850-1880 in Plymouth
maker:
William Heath

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© The Board of Trustees of the Science Museum

Anodized brass sextant with oval-pattern frame, polished limb and wooden arm in fitted mahogany box, made by William Heath, Plymouth, England, 1850-1880. Consists of inlaid polished silver 130° scale (-5° to 153°) with 10’ divisions, silver vernier (10”), four filter shades (red & green) and three horizon filters (red & green), scale magnifier on swivelling arm (lens missing). Fitted with threaded telescope bracket for sighting telescopes (87mm - star finder, 85mm – erect image, 189mm – inverted image & 82mm – sighting tube).

Details

Category:
Navigation
Object Number:
1981-838
type:
sextant
taxonomy:
  • furnishing and equipment
  • measuring device - instrument
credit:
Wellcome Trust