Millionaire Calculating Machine Component

Millionaire Calculating Machine Component

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This brass object was collected by Brooklyn high school teacher and historian of mathematics L. Leland Locke. It represents a nine by nine multiplication table. Seventeen shaped pieces are arranged in a row. The first represents multiples of 1, the second and third multiples of 2 (up to 2x9), the fourth and fifth multiples of 3 (up to 3x9), etc. Compare thes object to a piece on the left side of 317387.
Currently not on view
Object Name
calculating machine component
Hans W. Egli
place made
Switzerland: Zürich, Zurich
Physical Description
metal (overall material)
overall: 3.6 cm x 11.2 cm x 5 cm; 1 13/32 in x 4 13/32 in x 1 31/32 in
ID Number
nonaccession number
catalog number
Credit Line
Gift of L. Leland Locke
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Calculating Machines
Data Source
National Museum of American History
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