John Harrisons design for den "mindre klokken" nevnt av ham til Board of Longitude den 19. juni 1755, fra et sett med mekaniske notater og tegninger satt sammen av John Harrison (1693-1776) og hans sønn William (ca. 1726-72) (penn og blekk på papir)(John Harrison's design for the 'lesser watch' mentioned by him to the Board of Longitude on 19th June 1755, from a set of mechanical notes and drawings compiled by John Harrison (1693-1776) and his son William (c.1726-72) (pen & ink on paper))Unbekannt |
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Udatert · pen and ink on paper
· Bilde ID: 978350
The Worshipful Company of Clockmakers' Collection, UK / Bridgeman Images |
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