An explanation of a new construction and improvement of the sea octant and sextant, [electronic resource] : 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.
1775
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Title
An explanation of a new construction and improvement of the sea octant and sextant, [electronic resource] : 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.
Author
Martin, Benjamin, 1705-1782.
Imprint
London : printed for the author, at No. 171, Fleet-Street, [1775?]
Place of Publication or Printing
Great Britain -- England -- London.
Language
English
Description
[2],37,[1]p., fold.plates ; 8⁰.
Note
"The public are indebted solely to my son, J.L. Martin, for the invention .." (Preface); he was awarded patent no. 1088 in 1774.
Price from imprint: price 1s. 6d.
Reproduction of original from British Library.
Price from imprint: price 1s. 6d.
Reproduction of original from British Library.
Access Note
Access limited to authorized users.
Indexed In
English Short Title Catalog, T25321.
Reproduction
Electronic reproduction. Farmington Hills, Mich. : Cengage Gale, 2009. Available via the World Wide Web. Access limited by licensing agreements.
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