Surveying compass, British, 1913-1920

Made:
1913-1920 in Glasgow
maker:
Kelvin, Bottomley & Baird Limited
patentee:
Louis Wentworth Pakington Chetwynd

Electrically illuminated liquid prismatic compass by Kelvin, Bottomley and Baird, early 20th century

Details

Category:
Surveying
Object Number:
1922-44
Materials:
casing, metal, casing, glass, casing, water and casing, alcohol
Measurements:
diameter 92 mm
overall: height 158 mm
box: length 85 mm
type:
prismatic compass and magnetic compass
credit:
Miscellaneous Disposals Syndicate

Parts

Part of surveying compass, British, 1913-1920

Part of surveying compass, British, 1913-1920

Electrically illuminated liquid prismatic compass by Kelvin, Bottomley and Baird, early 20th century

Measurements:
diameter 92 mm
overall: height 158 mm
box: length 85 mm
Materials:
casing, metal , casing, glass , casing, water and casing, alcohol
Object Number:
1922-44/1
type:
radioactive material , instrument component , prismatic compass and magnetic compass
Battery case for surveying compass, British, 1913-1920

Battery case for surveying compass, British, 1913-1920

Battery casing for electrically illuminated liquid prismatic compass by Kelvin, Bottomley and Baird, Glasgow, Scotland, 1913-1920.

Measurements:
overall: 70 mm x 220 mm x 170 mm, .425kg
Materials:
metal (unknown) , brass (copper, zinc alloy) , copper (metal) , plastic (unidentified) , cotton (textile) , enamel , leather and phenolic
Object Number:
1922-44/2
type:
instrument component , prismatic compass and magnetic compass

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