Mercedes-Euklid Model 12 Calculating Machine
date: label: date made
content: 1920s
name: label: distributor
content: Coxhead, Ralph C.
label: maker
content: Mercedes-Bureau-Maschinen-Gesellschaft
notes: label: Description
content: This full-keyboard electric proportional rod calculating machine has an iron and steel frame painted black and 13 columns of round plastic keys. At the bottom of each column of keys is a red key that zeros the digit in that column. The keyboard is painted green. Numbers entered on the keys appear in a row of windows under the keyboard that shows 13 number dials.
label: Description
content: At the front of the machine is a row of 16 windows showing the result, a row of eight windows showing the dials of the revolution counter, and another row of 16 dials that may be used to accumulate totals. Small finger knobs are in front of these dials. These three rows of dials are on a movable carriage. Movable decimal markers are above all four rows of dials. The motor for the machine is under the mechanism and behind the carriage. The plug is on the right side.
label: Description
content: A metal tag on the right of the machine reads: COXHEAD (/) MERCEDES. A metal tag next to the dials of the revolution counter reads: RALPH C. COXHEAD (/) MERCEDES-EUKLID (/) CALCULATING MACHINE (/)] NEW YORK CHICAGO. A mark scratched in the base at the front reads: Property [/] Univ. Mich. A mark at the left front of the machine, on the frame for the carriage, reads: 9[. . .].
label: Description
content: Ralph C. Coxhead was the American agent for the Mercedes-Euklid in the 1920s. A Mercedes-Euklid model 12 with this capacity sold for $875.00 in 1928.
label: Description
content: References:
label: Description
content: E. Martin, <I>The Calculating Machines (Die Rechenmaschinen)</I>, trans. P. A. Kidwell and M. R. Williams, Cambridge: MIT Press, 1992, pp. 156–164.
label: Description
content: J. H. McCarthy, <I>The Business Machines and Equipment Digest</I>, 1928, vol. 1, sec. 9, pp. 24–28.
label: Location
content: Currently not on view
place: label: place made
content: Germany: Berlin, Berlin
label: place distributed
content: United States: Illinois, Chicago
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Calculating Machines
label: See more items in
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.324279
label: accession number
content: 256654
label: catalog number
content: 324279
objectType: label: Object Name
content: calculating machine
physicalDescription: label: Physical Description
content: glass (overall material)
label: Physical Description
content: plastic (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: 33 cm x 39 cm x 29.5 cm; 13 in x 15 11/32 in x 11 5/8 in