From F. and Anton Georg Eckhardt frères
ALS: American Philosophical Society
<The Hague, November 25, 1777, in French: One of us was
known to you in London, and had the honor of your esteem.
Our friend and correspondent M. Penet will give you the prospectus
of a work describing an instrument that we have invented;
we should be immensely flattered if you would allow
your name to be included among our subscribers in France.
We include a memorandum about a capstan of our design.
You will doubtless remember its debut in England, when the
Navy Board had it placed on a ship and it performed most
successfully; the ship has not yet put to sea, however, and the
capstan has not come into use. M. Penet will show you the
products of a manufactory that we have established, which
works with speed and precision and turns out better goods at
more moderate prices than any factory of its kind in Europe.>
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