Sextant with Artificial Horizon
The sextant has a black cardboard frame and index arm with no clamping screw or tangent screw. It has two index shades in red and green and the glasses are non-adjustable. It has a wooden telescope bracket that is also non-adjustable. Attached to the sextant is a fixed cardboard telescope measuring 101 mm in length.
The artificial horizon consists of a spirit level mounted on a wooden block attached to the frame below the horizon glass.
The instrument has a cardboard scale in white from -3° to 123° by 30 arcminutes, measuring to 120°. The sextant has a white cardboard vernier measuring to 1 minute.
Einson-Freeman started in 1909 as a lithographic company and after 1933 made jigsaw puzzles. The production of simple cardboard sextants was probably part of World War II efforts.
The artificial horizon consists of a spirit level mounted on a wooden block attached to the frame below the horizon glass.
The instrument has a cardboard scale in white from -3° to 123° by 30 arcminutes, measuring to 120°. The sextant has a white cardboard vernier measuring to 1 minute.
Einson-Freeman started in 1909 as a lithographic company and after 1933 made jigsaw puzzles. The production of simple cardboard sextants was probably part of World War II efforts.
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Object Details
ID: | NAV1171 |
---|---|
Collection: | Astronomical and navigational instruments |
Type: | Sextant with Artificial Horizon |
Display location: | Not on display |
Creator: | Einson-Freeman Co |
Date made: | circa 1945 |
Credit: | National Maritime Museum, Greenwich, London |
Measurements: | Overall: 60 x 305 x 310 mm; Radius: 229 mm |
Parts: | Sextant with Artificial Horizon |
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