TY  - JOUR
T1  - The Description of Two New Micrometers. By Mr. Ramsden, Optician; Communicated by Joseph Banks, Esq. P. R. S.
JF  - Philosophical Transactions of the Royal Society of London (1776-1886)
VL  - 69
SP  - 419
EP  - 431
PY  - 1779/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1779.0028
M3  - doi:10.1098/rstl.1779.0028
AU  - Ramsden, M.
AU  - Banks, J.
ER  -