A brief description of a new instrument, invented by Mr. Caleb Smith, for taking altitudes
of the sun, moon, and stars, from the visible horizon; or any other angles at sea:
whereby the interruption, and inconvenience, occasioned by the ship's motion, in observing
with the quadrants commonly used, is remedied, and prevented. And the latitude found
with great ease, accuracy, and expedition. With directions how to use it at Sea.
VIAF, LC Name Authority File, http://id.loc.gov/authorities/names/nr91033021, 2017-11-23
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