Nine inch ebony octant, London.

Richardson, Claire

 
Nine inch ebony octant, London.
4 0 c m
 
35cm
actual image size: 27cm x 32cm

Description

Navigational reflecting instrument made by J Smith (126 Wapping, London) of brass with ebony divided on ivory. An octant is used in surveying and in navigation to measure the angle between two objects. Octants were used by navigators to determine a ship's latitude by measuring the angle between the horizon and a celestial body, such as the Sun.

Image Details

Artist
 
Image Ref.
 
10424782

© Science Museum / Science & Society Picture Library

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