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Description: | 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. | License: | http://creativecommons.org/licenses/by-nc-sa/2.5/ | Subjects: | box sextant. | Temporal: | 1845-1855 | Source: | Science Museum | Creator: | William Cary | Identifier: | 1905-144 | Go to resource |
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