General Information

Serial #

N/A

Part Number

4

Total Parts

4

AKA

N/A

Patents

N/A

General Description

Metal casing (probably brass); Glass optics.

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

N/A

Width

N/A

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

3.1 cm

Volume

N/A

Lexicon

Group

Exploration and Survey

Category

Measurement-angles

Sub-Category

N/A

Manufacturer

AKA

Hughes

Country

England

State/Province

Unknown

City

London

Context

Country

North America

State/Province

Unknown

Period

Probably used c. 1940's+.

Canada

Used aboard the RCMP Arctic patrol schooner 'St. Rock' (1928-1950). The St. Roch was the first ship to cross the northwest passage from west to east (1942) and back (1944), and the first ship to circumnavigate North America (1950). It was retired in 1958: In 1962 it was declared a National Historic site. (Ref. 2).

Function

To measure the altitude of a heavenly body (sun, star, etc.) in order to determine the latitude and longitude.

Technical

Sextant used to measure angles between objects, especially celestial objects in relation to the horizon, in order to determine position at sea. Marins sextants are often larger and more solidly made than those used for land surveys; They also are fitted with shades, for sighting the sun. (Expl glossary) This sextant fitted with battery-powered light over vernier, and locking mechanism on index arm.

Area Notes

Unknown

Details

Markings

"25014" & broad arrow symbol incised on casing.

Missing

From CA of 08/21/1995 by Tony Missio: Undetermined

Finish

Dull grey-black finish applied to most surfaces of sextant(.001) and accessories (.002 - .004). silver scale; Off-white fine adjustment dial. Pt. wooden case is stained and varnished; Some green felt liners over supports.

Decoration

N/A