Vertical force measuring needle

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Vertical force measuring needle for the heeling error instrument

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ID:	ACO0078.2
Type:	Vertical force measuring needle
Display location:	Not on display
Creator:	Dover, A. W.
Date made:	1892
Credit:	National Maritime Museum, Greenwich, London, Admiralty Compass Observatory
Measurements:	Overall: 7 mm x 94 mm x 44 mm
Parts:	Heeling error instrument model Heeling error instrument model lid (ACO0078.1) Vertical force measuring needle (ACO0078.2)