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Boat Sextant
The sextant has a grey plastic (Makrolon) plate, plastic handle and a stiffening bar at the back. The aluminium micrometer drum and clamp are located on the back of the index arm. The instrument has three green shades and two green horizon shades. The index and horizon glass are fitted with adjustment screws by an Allen key. The telescope is 79 mm in length with an erect image. It is attached to the frame by a plastic clip. Accompanying the instrument is an Allen key.
The instrument has a plastic scale from -20° to 120° by 1°, measuring to 120°. Micrometer to 1 arcminute.
The sextant is contained in a fitted black plastic box.
Ebbco started manufacturing these plastic sextants in the 1960s, especially for the yachting market.
The instrument has a plastic scale from -20° to 120° by 1°, measuring to 120°. Micrometer to 1 arcminute.
The sextant is contained in a fitted black plastic box.
Ebbco started manufacturing these plastic sextants in the 1960s, especially for the yachting market.
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Object Details
| ID: | NAV1225 |
|---|---|
| Collection: | Astronomical and navigational instruments |
| Type: | Boat Sextant |
| Display location: | Not on display |
| Creator: | East Berks Boat Co |
| Date made: | circa 1960 |
| Credit: | National Maritime Museum, Greenwich, London |
| Measurements: | Overall: 95 mm x 230 mm x 240 mm |
| Parts: | Boat Sextant |