Madas Calculating Machine
Madas Calculating Machine
- Description
- 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.
- 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.
- 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.
- 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.
- Compare MA317288, MA.324278, MA.323586 and 1982.0794.88.
- Reference:
- H. W. Egli, Ltd., MADAS 50 Jahre Arbeit, Zurich.
- Location
- Currently not on view
- Object Name
- calculating machine
- date made
- after 1921
- maker
- Egli, Hans W.
- place made
- Switzerland: Zürich, Zurich
- Physical Description
- metal (overall material)
- plastic (overall material)
- ceramic (overall material)
- Measurements
- overall: 19 cm x 65.8 cm x 40 cm; 7 15/32 in x 25 29/32 in x 15 3/4 in
- ID Number
- MA.324278
- accession number
- 256654
- serial number
- 6792
- catalog number
- 324278
- Credit Line
- Gift of University of Michigan, School of Public Health
- subject
- Mathematics
- See more items in
- Medicine and Science: Mathematics
- Science & Mathematics
- Calculating Machines
- Data Source
- National Museum of American History
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