TY  - JOUR
T1  - An Account of Some Improvements of the Mariners Compass, in Order to Render the Card and Needle, Proposed by Doctor Knight, of General Use, by John Smeaton, Philosophical Instrument-Maker
JF  - Philosophical Transactions (1683-1775)
VL  - 46
SP  - 513
EP  - 517
PY  - 1753/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1749.0096
M3  - doi:10.1098/rstl.1749.0096
AU  - Knight, D.
AU  - Smeaton, J.
ER  -