Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 737
with an indented plate of forty-five inches diameter,winch divided a sextant for Mr. Birds examination so accurately, that the Board of Longitude, everready to remunerate any successful endeavor to promote the lunar method of determining the longi-tude at sea, did not hesitate to confer a handsome…
Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.