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An account of the going, during Thirteen Months. At the Royal Observatory at Greenwich, of a pocket Chronometer, Invented and Made by John Arnold, Published with Permission of the Board of Longitude.
Arnold, John, chronometer maker.Date: 1780- Books
- Online
An account kept during thirteen months in the Royal Observatory at Greenwich, of The Going of a Pocket Chronometer, made on a new construction, by John Arnold, Having his new-invented Ballance Spring, and A Compensation for the Effects of Heat and Cold In the Ballance. Published by Permission of the Board of Longitude.
Arnold, John, chronometer maker.Date: 1780- Pictures
Clocks: a marine chronometer, barometer, and thermometer. Engraving by Defehrt after L.J. Goussier.
Goussier, Louis-Jacques, 1722-1799.Reference: 40838i- Pictures
Clocks: a chronometer mechanism. Engraving by Defehrt after L.J. Goussier.
Goussier, Louis-Jacques, 1722-1799.Reference: 40762i- Pictures
Clocks: a chronometer mechanism. Engraving by Defehrt after L.J. Goussier.
Goussier, Louis-Jacques, 1722-1799.Reference: 40745i