Friden Model ST 10 Calculating Machine

Friden Model ST 10 Calculating Machine

Usage conditions apply
Friden Calculating Machine Company produced its “Supermatic Tabulating” model from about 1940 through 1949. This full-keyboard, non-printing electric stepped drum calculating machine has a gray metal frame and ten columns of light green and dark green plastic number keys, with a blank key at the bottom of each column. Metal rods between the columns of keys turn to indicate decimal places. On the right are two columns of blue function bars and keys. On the left is a nine-digit register that indicates numbers entered for multiplication. Below it is a block of nine light green digit keys, with a 0 bar below. These are surrounded by further levers and function keys.
Behind the number keys is a movable carriage with an 11-digit revolution register and a 21-digit result register. The result register has plastic buttons above it that can be used to set up numbers. Ten numbered buttons are under the revolution register as well. Zeroing knobs for the registers are on the right of the carriage. Decimal markers slide between the registers on the carriage.
Streamlines decorate the back and the bottom corners. A mark inside an opening on the bottom reads: ST10-160099. The sides are marked: FRIDEN.
The machine has a plastic cover.
Compare 1984.3079.01, 1984.3079.02, 1984.3079.03, and 335421.
Date from Jorgenson.
This is one of five Friden calculating machines given to the Smithsonian by Vincent L. Corrado (1917-1984), a native of Covington, Kentucky, who earned bachelor’s and master’s degrees in accounting at Catholic University, served in the United States Army from 1942 through 1973, and then joined the Veterans Administration for the rest of his life.
E. Jorgenson, Friden Age List Office Machine Americana, p. 1.
“Vincent Corrado, VA Memorials Director, Dies,” Washington Post, September 25, 1984, p. B6.
Currently not on view
Object Name
calculating machine
date made
Friden, Inc.
place made
United States: California, San Leandro
Physical Description
metal (overall material)
plastic (overall material)
rubber (overall material)
overall: 20.8 cm x 45.4 cm x 34 cm; 8 3/16 in x 17 7/8 in x 13 3/8 in
overall: 39 in x 39 in x 24 in; 99.06 cm x 99.06 cm x 60.96 cm
ID Number
nonaccession number
catalog number
Credit Line
Gift of Vincent L. Corrado
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Calculating Machines
Data Source
National Museum of American History
Nominate this object for photography.   

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.


Add a comment about this object