Facit ESA-0 Calculating Machine
date: label: date made
content: 1952
name: label: maker
content: Atvidaberg-Facit
notes: label: Description
content: This ten-key non-printing electric pinwheel calculating machine has an iron frame painted dark green. It has fully automatic addition, subtraction, multiplication, and division, as well as electric clearing of registers.
label: Description
content: A lever on the front left sets the machine for multiplication, addition (and subtraction), or division. There are five function keys and three tab keys. All the key tops are plastic. Plastic-covered windows reveal the number wheels of the product register, multiplier register, and setting mechanism. Included are a plastic cover, rubber cord, and leather-covered wood case.
label: Description
content: A mark on the bottom of the machine reads: 347409. A tag on the back reads: MOD.ESA-0 (/) Fi (/) 105-115V = 65W. Another tag on the back reads: MADE BY (/) ATVIDABERG-FACIT (/) SWEDEN (/) Protected by patents in Sweden and other countries. A mark on the front reads: FACIT. The digit keys are marked: 2 4 5 7 9 (/) 1 3 0 6 8. A name tag attached to the case reads: WILLIAM C. ZAHN.
label: Description
content: The Swedish firm of Facit Calculator began manufacturing pinwheel calculating machines in 1918 and became Facit in 1924. In 1932 it began to manufacture a ten-key calculating machine. The ESA-0 is an electric, fully automatic version of that machine, with electric clearing of registers. It sold from 1949 through 1952.
label: Description
content: According to the donor, this machine was used by her husband, William C. Zahn, in his wide-ranging research on organic chemistry, the senses, the weather, and economics.
label: Description
content: For related documentation, see 1996.0033.02, 1996.0033,03. and 1996.0033.04.
label: Description
content: Reference:
label: Description
content: <I>FACIT Kalkylmaskiner - samitliga modeller</I>, Stockholm, 1961.
label: Location
content: Currently not on view
place: label: place made
content: Sweden: Östergötland, Åtvidaberg
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 Frances R. Zahn
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1996.0033.01
label: catalog number
content: 1996.0033.01
label: accession number
content: 1996.0033
label: maker number
content: 347409
objectType: label: Object Name
content: calculating machine
physicalDescription: label: Physical Description
content: plastic (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: 20.5 cm x 34.5 cm x 33 cm; 8 1/16 in x 13 19/32 in x 13 in