Combined Computing Device and Weighing-Scale.
Description:
Patent for "a simple, economical, and portable combined computing and weighing scale for ordinary use so simple in its operation that an illiterate person can manipulate it with as much facility as one trained to the practical use of more complicated devices" (lines 20-25).
Date:
July 11, 1899
Creator:
Stephens, John H.
Partner:
UNT Libraries Government Documents Department