Invented by the late Mr. Thomas Mudge.
To which is prefixed a narrative by Thomas Mudge, his son.
A republication of a tract by the late Mr. Mudge on the improvement of time-keepers and a series of letters written by him to his Excellency Count Bruhl, between the years 1773 and 1787.
Reprint 1799 with 9 plates.
Edition : 1977