40mm long piece of H4’s mainspring

Small wood display block covered in buff-coloured wool, with a 40mm long piece of H4’s mainspring attached. This piece had been presented to the Science Museum whose later inventory number is marked under the block (MISC.19.51/3) and who then presented it to the NMM.

Object Details

ID: ZAA0131
Collection: Timekeeping
Type: Main spring
Display location: Not on display
Creator: Harrison, John; Gould, Rupert Thomas
Date made: circa 1760
Credit: National Maritime Museum, Greenwich, London
Measurements: Overall: 106 x 33 x 24 mm
Parts: 40mm long piece of H4’s mainspring