John Harrison Esq. Inventor of the Time Keeper.European Magazine.
Published by John Sewell, No 32 Cornhill, 1st Sept.r 1788.
Engraving. 180 x 115mm (7 x 4½") Thread margins, hole in inscription area.
A portrait of John Harrison (c.1693 - 1776), in profile with wig curled, in an oval frame. Harrison, an English carpenter and clockmaker who invented the marine chronometer, finally solving the Logitude question (of how to establish the East-West position or longitude of a ship at sea) thus revolutionising and extending the possibility of safe long-distance sea travel. The problem was considered so intractable and, following the Scilly naval disaster of 1707, so important that the British Parliament offered the Longitude prize of £20,000.
[Ref: 45040] £160.00
Engraving. 180 x 115mm (7 x 4½") Thread margins, hole in inscription area.
A portrait of John Harrison (c.1693 - 1776), in profile with wig curled, in an oval frame. Harrison, an English carpenter and clockmaker who invented the marine chronometer, finally solving the Logitude question (of how to establish the East-West position or longitude of a ship at sea) thus revolutionising and extending the possibility of safe long-distance sea travel. The problem was considered so intractable and, following the Scilly naval disaster of 1707, so important that the British Parliament offered the Longitude prize of £20,000.
[Ref: 45040] £160.00