Compass cards

Black card containing six compass cards showing the type of graduations introduced in 1931.

PATT. 22A & 193. 6.5" dia
PATT. 173, 195 & 198 6.0" dia
PATT. 158. 5.5" dia
PATT. 183. 4.25" dia
PATT. 184. 3.25" dia
PATT. 28P. 3.25" dia

Object Details

ID: ACO0146
Type: Compass cards
Display location: Not on display
Creator: Unknown
Date made: 1931
Credit: National Maritime Museum, Greenwich, London, Admiralty Compass Observatory
Measurements: Sheet: 544 mm x 343 mm
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