Compass cards

Black wooden frame containing six types of card in use prior to 1924.

PATT. 22A. 6.5" dia
PATT. 173. 6.0" dia
PATT. 158. 5.5" dia
PATT. 184. 3.0" dia
PATT. 28P. 3.25" dia
PATT. 182. 4.25" dia

Object Details

ID: ACO0147
Type: Compass cards
Display location: Not on display
Creator: Captain Chetwynd; Kelvin Bottomley & Baird Ltd
Date made: 1924
Credit: National Maritime Museum, Greenwich, London, Admiralty Compass Observatory
Measurements: Overall: 30 mm x 565 mm x 410 mm