Rockwell 9TR Handheld Electronic Calculator
date: label: date made
content: 1975-1976
name: label: maker
content: Rockwell International
notes: label: Description
content: This handheld electronic calculator has a green plastic case and eighteen rounded rectangular plastic keys. In addition to ten digit keys and a decimal point key, it has a clear entry/clear key, four arithmetic function keys, a total key, and a percentage key. A sticker above the keyboard reads in part: nheim. The on/off switch is on the left side. Behind the keyboard is an eight-digit LED display. Text behind the display reads: Rockwell. A jack along the back edge would hold a power adapter.
label: Description
content: The back of the calculator has four feet and a compartment at the top for a nine volt battery. A sticker below this gives operating examples. Text near the bottom reads: Rockwell (/) International Microelectronics . . (/) Anaheim, CA . . . (/) Calculator Model 9TR (/) Assembled in Mexico (/) U.S. and Foreign Parts. Further text reads: Ser. (/) No. 167898.
label: Description
content: According to Ball and Flamm, this model of a Rockwell calculator was especially manufactured for True Value Hardware stores. Compare the Rockwell 8R (1988.0988.12).
label: Description
content: References:
label: Description
content: [Advertisement], <I>Chicago Tribune</I>, August 15, 1975, p. 8. Model 9TR advertised by a True Value hardware store as on sale for $14.88.
label: Description
content: [Advertisement], <I>Chicago Tribune</I>, December 10, 1976, p. 19. Model 9TR advertised by a True Value hardware store as on sale for $7.99.
label: Description
content: Guy Ball and Bruce Flamm, <I>The Complete Collector’s Guide to Pocket Calculators</I>, Tustin, CA: Wilson/Barnett, 1997, p. 126.
label: Location
content: Currently not on view
place: label: place made
content: Mexico
setName: label: See more items in
content: Medicine and Science: Computers
label: See more items in
content: Computers & Business Machines
label: See more items in
content: Handheld Electronic Calculators
creditLine: label: Credit Line
content: Gift of John B. Priser
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1986.0988.015
label: catalog number
content: 1986.0988.015
label: accession number
content: 1986.0988
objectType: label: Object Name
content: electronic calculator
label: Other Terms
content: electronic calculator; Handheld
physicalDescription: label: Physical Description
content: plastic (case; keys; display cover material)
label: Physical Description
content: metal (circuitry material)
label: Physical Description
content: paper (sticker material)
label: Measurements
content: overall: 1 in x 3 in x 6 in; 2.54 cm x 7.62 cm x 15.24 cm