1219

FERDINAND RUDOLF HASSLER A.D.

Currency:USD Category:Everything Else / Other Start Price:NA Estimated At:75.00 - 100.00 USD
FERDINAND RUDOLF HASSLER A.D.
<b>1219. FERDINAND RUDOLF HASSLER</b> (1770 - 1843) Swiss scientist, the superintendent of the United Coast Survey from 1815-1817, and U.S. gauger under Andrew Jackson. An interesting scientific A.D., unsigned, 4pp. 4to., [n.p., n.d. but ca. 1915], titled "<i>An observer travelling either at Sea or land, furnished with a reflecting instrument and a chronometer, can make a good approximate determination of Latitude and Longitude of a place, where he may be at noon, by the following process or another...</i>". With detailed instructions following. Boldly penned in brown ink, pen docket at top, very good condition.<b> $75-100</b>