Friden Model STW 10 Calculating Machine
date: label: date made
content: 1960
name: label: maker
content: Friden Calculating Machine Company
notes: label: Description
content: This full-keyboard, electric non-printing calculating machine has a metal frame painted gray-brown and ten columns of color-coded brown and light tan plastic number keys, with a blank light tan key at the bottom of each column. Metal rods between the columns of keys and under the keyboard turn to indicate decimal places. A small brown and tan bar slides to the right to reset the decimal rods. On the right are two columns of function bars. The capabilities of the Friden STW-10 are quite similar to those of the earlier ST-10, although the exterior design and color are different.
label: Description
content: On the left is a ten-digit register that indicates numbers entered for multiplication. Below it is a block of nine tan digit keys, with a 0 bar below. These are surrounded by three levers and four function keys.
label: Description
content: Behind the number keys is a movable carriage with an 11-digit revolution register and a 20-digit result register. Gray-brown plastic buttons above the result register rotate to set up numbers. Ten numbered buttons are under the revolution register as well. Zeroing knobs for the registers are on the top right of the carriage. All three registers have sliding decimal markers.
label: Description
content: The donor reported a date for the machine of 1960 and said that the initial price was $880. Jorgenson gives the same date. Carl Holm gives 1956 the date of manufacture.
label: Description
content: Compare MA.334379, MA.335419 and 1984.3079.04.
label: Description
content: References:
label: Description
content: Accession File.
label: Description
content: Ernie Jorgenson., <I>Friden Age List</I>, Office Machine Americana, p. 5.
label: Description
content: Carl Holm, “Milestones in the Development of Friden.”
label: Location
content: Currently not on view
place: label: place made
content: United States: California, San Leandro
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Calculating Machines
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content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of William L. Jackson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.335419
label: accession number
content: 319049
label: maker number
content: STW 10 635028
label: catalog number
content: 335419
objectType: label: Object Name
content: calculating machine
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: rubber (overall material)
label: Physical Description
content: plastic (overall material)
label: Measurements
content: overall: 21.8 cm x 45.5 cm x 36.8 cm; 8 19/32 in x 17 29/32 in x 14 1/2 in