Machine A Calculer Rebo

By the 1920s, companies in the United States, Germany, and France manufactured inexpensive notched band adders. A firm in Marseille, France, under the direction of engineer E. Reybaud, sold this device from 1922 until at least 1930. This example was from the collection of L. Leland Locke.
The metal adder and stylus fit into a red paper container. The adder has nine columns of digits and a zeroing bar at the top. Instructions indicate that the device came in two models that sold for 25 and 40 francs. This was sufficiently inexpensive that every member of a commercial firm could have such an adder.
Reference: “The Register,” Typewriter Topics, vol. 76 (September 1930), p.14.
Currently not on view
Object Name
date made
ca 1925
Reybaud, E.
Physical Description
paper (overall material)
metal (overall material)
overall: 1.5 cm x 9.5 cm x 16.4 cm; 19/32 in x 3 3/4 in x 6 15/32 in
place made
France: Provence-Alpes-Côte d'Azur, Marseille
ID Number
catalog number
accession number
Science & Mathematics
See more items in
Medicine and Science: Mathematics
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Gift of L. Leland Locke
Additional Media

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