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Date: |
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Description: | 'XX238'
?Jac. P. Vrolijk | Scheveningen?
The sextant has a black-lacquered brass Dollond-pattern frame and a wooden handle. The tangent screw and clamping screw are positioned on the back of the index arm. The instrument has two green shades and one green horizon shade. Index- and horizon-glass adjustment is made by screws and capstan screws.
Attached to the sextant is a magnifier on a 100mm swivelling arm. There is also a threaded telescope bracket which is non-adjustable. The telescope is 87 mm in length with an erect image. A second telescope is missing. Accompanying the sextant is a sight-tube, which is 88 mm long, a green shaded eyepiece, a brush, and an adjusting pin. A second magnifier is from another instrument.
The instrument has a bronzed limb with an inlaid silver scale from -5� to 125� by 20 arcminutes, measuring to 108�. The sextant has a silver vernier measuring to 30 arcseconds, with zero at the right.
The sextant is contained in a square fitted wooden box.
AUDIT - six unnumbered parts
caption: Sextant - Front
caption: Sextant - Back
caption: Sextant - Box
caption: Sextant - Inscription
caption: Record Shot - Do not reproduce. | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | Sextant Vernier octants | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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