Madas Calculating Machine
date: label: date made
content: after 1921
name: label: maker
content: Egli, Hans W.
notes: label: Description
content: This electrically powered and non-printing key-driven calculating machine has a metal frame painted black and a metal keyboard painted green. At the top of each of the nine columns of color-coded black and white plastic keys is a window showing the digit entered. A clearance key and two other keys are to the left of the keyboard, and a large button for operating the machine is to the right. Further to the left are levers relating to shifting from addition and multiplication to subtraction, and to automatic division.
label: Description
content: Behind the keyboard is a carriage with 9 windows of a revolution counter, 16 windows of a result register, a bell, and zeroing levers for both registers. The motor is behind the carriage on the right. A black cover fits over the front part of the machine. Instructions for operating the machine are given on paper sheets attached to the inside of the cover.
label: Description
content: The case is marked: MULTIPLICATION AUTOMAT. DIVISION ADDITION SUBTRACTION (/) MADAS. A mark on the left front corner reads: No 6792 (/) MADE IN SWITZERLAND. A metal tag attached to the left near the front reads: H.W. EGLI STE AME (/) Calculating Machines (/) ZURICH (Switzerland). A mark left of the keyboard reads: PROPERTY (/) OF (/) UNIVERSITY OF MICHIGAN. Another mark there reads: XV 3200 AH (/) #6792. A mark above the keyboard reads: W.A.Morschhauser (/) SOLE AGENT (/) 1 Madison Avenue, NEW YORK CITY.
label: Description
content: The key-set MADAS with electric drive was introduced in 1922. This example comes from the Department of Biostatistics of the University of Michigan School of Public Health.
label: Description
content: Compare MA317288, MA.324278, MA.323586 and 1982.0794.88.
label: Description
content: Reference:
label: Description
content: H. W. Egli, Ltd., <I>MADAS 50 Jahre Arbeit</I>, Zurich.
label: Location
content: Currently not on view
place: label: place made
content: Switzerland: Zürich, Zurich
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 University of Michigan, School of Public Health
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.324278
label: accession number
content: 256654
label: serial number
content: 6792
label: catalog number
content: 324278
objectType: label: Object Name
content: calculating machine
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: plastic (overall material)
label: Physical Description
content: ceramic (overall material)
label: Measurements
content: overall: 19 cm x 65.8 cm x 40 cm; 7 15/32 in x 25 29/32 in x 15 3/4 in