The Description and Use of an Apparatus Added as an Improvement to Davis's Quadrant, Consisting of a Mercurial Level, for Taking the Co-Altitude of Sun or Star at Sea, without the Usual Assistance of the Sensible Horizon, Which Frequently is Obscured. By Charles Leigh, Gent

✍ Scribed by Leigh, C.

• Book ID: 120118413
• Publisher: The Royal Society
• Year: 1738
• Weight: 491 KB
• Volume: 40
• Category: Article
• ISSN: 0261-0523
• DOI: 10.1098/rstl.1737.0073