1 matching record(s)
U (Stack)Wright, G.
The Description and Use of a new constructed Sextant and Quintant, by His Majesty's Patent; being an Improvement on the Hadley's Quadrant. By which Angular Distances are measured to the greatest Precision, from 0'. to 150o. 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. ...
A New Edition. London: Printed for Messrs. Gregory and Wright, Opticians, no. 148, Leaden-Hall-Street, 1787. 8vo. R. S. Clay's copy (purchase)
[1949- ]
1787