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Title: Variation Compass and magnetometer, 1837-1843 [Go to resource]
Description: Unifilar variation compass and magnetometer by Henry Barrow & Company, 26 Oxenden Street, London. Used by Sir J. Richardson and on the voyages of Sir John Franklin. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: magnetic variation compass
magnetometer
magnetic measuring instrumentTemporal: 1837-1843 Source: Science Museum Creator: Henry Barrow & Co. Identifier: http://collectionsonline.nmsi.ac.uk/grab... Go to resource More Like this...
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