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Title: Course and speed calculator Mk IIA [Go to resource]
Description: Course and speed calculator Mk IIA. HTA(1928) Ltd, AM 68/125 in fitted wooden case License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Temporal: 1928 Source: Science Museum Identifier: 1994-1178 Go to resource More Like this...
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