Total force needle

Two needles,edge bar type with pointed ends. Length 3.5". Width 0.25". Held in metal box 4.8 x 1.8 x 0.5" (12.4 x 4.7 x 1.3 cm)

Object Details

ID: ACO0095
Type: Total force needle
Display location: Not on display
Creator: Dover, A. W.
Date made: Unknown
Credit: National Maritime Museum, Greenwich, London, Admiralty Compass Observatory
Measurements: Overall: 15 mm x 122 mm x 47 mm