An important improvement in the mariners' & surveyors' compass needles
Subtitle: whereby means are found to so modify the magnetic and electric fluids, as to take up local attractions, and to correct the derangements of the needle, and settle it instantaneously to its polarity
By: by M. Smith ...
Publisher: William Greer
Published: 1832
Place of publication: Washington, D.C
Language: eng
Subjects: Compass.; Magnetic declination.
Notes: NUC pre-1956  NS0646802