Controller Calculating Machine Components


These objects were collected by Brooklyn high school teacher and historian of mathematics L. Leland Locke. The three small hollow pieces each have a steel plate with curved sides at the top that is attached to a brass piece that carries a gear. Pieces like this are found on the shaft of 1983.3003.18. Also compare to 311943.

Maker: Controller Company

Location: Currently not on view

Place Made: United States: New York, New York City

Subject: Mathematics


See more items in: Medicine and Science: Mathematics, Calculating Machines, Science & Mathematics


Exhibition Location:

Credit Line: Gift of L. Leland Locke

Data Source: National Museum of American History

Id Number: 1983.3003.024Nonaccession Number: 1983.3003Catalog Number: 1983.3003.024

Object Name: calculating machine components

Physical Description: metal (overall material)Measurements: overall: 2.4 cm x 2.5 cm x 2.5 cm; 15/16 in x 31/32 in x 31/32 in


Record Id: nmah_689897

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.