+
-
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.
For more information about using images from our Collection, please contact RMG Images.
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 |