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Type C.K.25
The sextant has a grey-lacquered alloy casing with artificial materials housing optical equipment. The instrument has four settings for shades in clear, dark grey, and two blue.
The sextant has a circular black scale with two scales, each from 0° to 100° by 1°. It also has a black plastic micrometer to 1 arcminute.
The solar sextant was screwed onto the search periscope of a submarine, for taking sights of both the Sun and stars; this type was probably used on British conventional submarines.
The provenance suggests that Barr and Stroud manufactured this instrument.
The sextant has a circular black scale with two scales, each from 0° to 100° by 1°. It also has a black plastic micrometer to 1 arcminute.
The solar sextant was screwed onto the search periscope of a submarine, for taking sights of both the Sun and stars; this type was probably used on British conventional submarines.
The provenance suggests that Barr and Stroud manufactured this instrument.
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Object Details
| ID: | NAV1979 |
|---|---|
| Collection: | Astronomical and navigational instruments |
| Type: | Solar sextant for submarine periscope |
| Display location: | Not on display |
| Creator: | Unknown; Barr & Stroud Ltd |
| Date made: | 1970s; 1970-1980 1970-80 |
| Credit: | National Maritime Museum, Greenwich, London |
| Measurements: | Overall: 215 x 100 x 101 mm |