The earliest book published in the English language devoted to clocks and watches.
Green cloth boards, 120 pages. The Thames Facsimile Company reprint 1962 of the very rare 1675 original.
Written at the time of Tompion's and Seignior's experimentation with the new Hooke/Huygens balance-spring for watches, the book is mainly concerned with the setting and regulating of timekeepers in a series of questions and answers, and also describes Oughtred's method of calculating wheel trains.
In almost 'as new' condition, even retaining the flimsy protective wrapper as sold.
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