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Title: Magnetic compass, European, 1700-1730 [Go to resource]
Description: Magnetic variation compass (?), European, 1700-1730. Fitted with 8.5cm needle, set in 23cm x 23cm brass plate, with gnomon and plumbline 30 degree variation scale, hours, and 180 outer scale. [shows time, mag. and geog. south] License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: magnetic compass Temporal: 1700-1730 Source: Science Museum Creator: Unknown maker Identifier: 1986-654 Go to resource More Like this...
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