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US Patent: 210,069
Improvement in Mariners' Compasses
Magnetic adjustment mechanism added to the mariners' compass
Patentee:
William Thomson (exact or similar names) - Glasgow, Scotland

USPTO Classifications:
33/359

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Charles J. Gooch
W. R. Edelen
St. John Vincent Day
David Drysdale Austin
Patent Dates:
Applied: Oct. 19, 1877
Granted: Nov. 19, 1878

Patent Pictures:
Condensed view of all the patent's drawings
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