comptometer
nounEtymology Genericized trademark of Felt and Tarrant Manufacturing Company, apparently a blend of compute and meter (“measure”).
1
A mechanical or electromechanical calculator; an adding machine without a crank, driven instead by keypress.
- Another was able to add up correctly the most complicated lists of figures in less time than a comptometer.1956, Anthony Burgess, Time for a Tiger (The Malayan Trilogy), published 1972, page 56:
- Derived terms
- comptometrist