Accession No
2642
Brief Description
Stuart's marine distance meter, by G. Lee and Son, English, 1930 (c)
Origin
England; Portsmouth
Maker
G. Lee and Son
Class
navigation
Earliest Date
1930
Latest Date
1930
Inscription Date
Material
metal (oxidised brass, steel, brass); plastic (ivorine); glass; wood
Dimensions
box length 191mm; breadth 125mm; height 46mm
Special Collection
Provenance
Purchased from Christie’s, South Kensington, London, England; lot 250, 15/5/1980.
Inscription
‘STUART’S MARINE
DISTANCE METER
840’
‘G. LEE & SON
THE HARD
PORTSMOUTH’
‘J.F.S.’
Description Notes
Stuart’s marine distance meter/station keeper. Oxidised brass, steel and ivorine. Front has scale of ‘cables’ moved by rack and pinion with knurled brass knob, steel cross-piece graduated for masthead height with cursor and clamp, mount for telescope, divided lens. Reverse has table for noting ships and masthead heights. Telescope with one draw tube. Fitted wooden box. Instruction sheet (in file).
References
Events
Description
The Marine Distance Meter measures the angle of any object for the purposes of finding distance at sea. It was also used for keeping station in a convoy of ships.
If the height of the distant object (ship) is known, its distance can be read off from the angle measurement. The reverse of the instrument has a table that gives the overall height of ships.
31/08/2006
Created by: updated by Ruth Horry on 31/08/2006
FM:44468
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