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Clerk using a Pascal adding machine, 1835Clerk using an adding machine of the type developed by Blaise Pascal (1623-1664), 1835. (Colorised black and white print)
Pascals digital counting machine of 1642, 1751-1780Blaise Pascals (1623-1664) digital counting machine (1642) showing (top) two of the train of number wheels which were viewed through windows in the casing of the machine
Mechnical tally counter, ca. 1960. Creator: Veeder-RootTally counter owned by Chris Dundee, original owner of the World Famous 5th St. Gym, a boxing gym in Miami Beach, Florida, where many fighters made their names, including Muhammad Ali
