Box type pocket sextant.

Made:
1845-1855 in Strand
maker:
William Cary

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Science Museum Group
© The Board of Trustees of the Science Museum

Pocket box sextant made by the company of William Cary, Strand, City of Westminster, London, England, 1845-1855. Consists of two circular lacquered brass plates with lid that acts as a handle when used. Fitted with Inlaid silver 135° scale (-5° to 145°) with 30' divisions and a silver vernier (1' div.). The index arm is rotated by a milled knob on the upper plate with two filter shades (red & green) operated by lever. The index glass is fixed with adjustment for the horizon glass. Fitted with magnifier (single lens) on hinged 45 mm swivel arm, 50mm telescope and choice of a large and a small pinhole.

Details

Category:
Surveying
Object Number:
1905-144
Materials:
brass and glass
type:
box sextant.
taxonomy:
  • furnishing and equipment
  • measuring device - instrument
  • sextant
  • pocket sextant
credit:
Stevens, J.C.