TY  - JOUR
T1  - 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
JF  - Philosophical Transactions (1683-1775)
VL  - 40
SP  - 417
EP  - 424
PY  - 1753/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1737.0073
M3  - doi:10.1098/rstl.1737.0073
AU  - Leigh, C.
ER  -