The description and use of a new constructed sextant and quintant, by His Majesty's patent
Subtitle: being an improvement on the Hadley's quadrant : by which angular distances are measured to the greatest precision, from 0'. to 150⁰. without inverting the instrument in measuring to the right or left, and with double the space of illumination, or field of view : also a correct method of adjusting the glasses, and applying the instrument for the purposes of finding the latitude and longitude at sea : also a new method of using the back observation, and adjusting the glasses of the improved octant
By: by G. Wright
Contributors: Lodge, John, active 1754-1796, engraver
Edition: A new edition.
Publisher: Printed for Messrs. Gregory and Wright, opticians, no. 148, Leaden-Hall-Street
Published: 1787
Place of publication: London
Language: eng
Number of pages: 40
Subjects: Sextant; Early works to 1800; Astronomical instruments
Notes: Edition statement precedes statement of responsibility on title page.

Signatures: [A]⁴ B-E⁴.

First plate signed: "Jn.o Lodge, sculp".