An explanation of a new construction and improvement of the sea octant and sextant: containing, A most easy, expeditious and accurate Method of adjusting and rectifying those Instruments for Use both at Sea and Land. Also the best Disposition of the Glasses; with Directions for making the Fore and Back Observations; and the several Steps in the Process of finding the Longitude at Sea. Illustrated by four Copper-Plates. By B. Martin
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1. Verfasser: Martin, Benjamin 1705-1782 (VerfasserIn)
Format: Elektronisch E-Book
Sprache:English
Veröffentlicht: London printed for the author, at No. 171, Fleet-Street [1775?]
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Beschreibung:"The public are indebted solely to my son, J.L. Martin, for the invention .." (Preface); he was awarded patent no. 1088 in 1774
English Short Title Catalog, T25321
Price from imprint: price 1s. 6d
Reproduction of original from British Library
Beschreibung:Online-Ressource ([2],37,[1]Seiten, fold.plates) 8°

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