Metric Conversion Card
date: label: date made
content: 1972
name: label: maker
content: U.S. Department of Commerce, National Bureau of Standards
notes: label: Description
content: In the 1970s, after metric units of measure had been adopted in Canada and Great Britain, some people in the United States advocated adoption of the metric system. The National Bureau of Standards of the U. S. Department of Commerce prepared this white plastic reference card to assist those wishing to use the unfamiliar units of measure. One side gave approximate conversion factors for computing metric measures from customary measures of length, area, mass and volume. This side also has a scale eight centimeters long divided to millimeters, and a chart with temperatures in degrees Fahrenheit along the top and temperatures in degrees centigrade along the bottom.
label: Description
content: The other side of the card gives factors for converting from metric to common measures of length, area, mass, volume, and temperature. There also is a scale three inches long divided to 1/16th of an inch.
label: Description
content: The card was a gift of machinist George A. Norton, a longtime employee of the National Museum of American History.
label: Location
content: Currently not on view
place: label: place made
content: United States: District of Columbia, Washington
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
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content: Mathematical Charts and Tables
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content: Metric System
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content: Science & Mathematics
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content: Measuring & Mapping
creditLine: label: Credit Line
content: Gift of George A. Norton III
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1990.3231.02
label: catalog number
content: 1990.3231.02
label: nonaccession number
content: 1990.3231
objectType: label: Object Name
content: mathematical table
physicalDescription: label: Physical Description
content: plastic (overall material)
label: Measurements
content: overall: .1 cm x 6.2 cm x 9.2 cm; 1/32 in x 2 7/16 in x 3 5/8 in