Impact Metric Converter Slide Rule for Regal Beloit
date: label: date made
content: 1971
name: label: maker
content: Impact
notes: label: Description
content: Around 1970 many American companies and government agencies encouraged Americans to adopt the metric system. Regal Beloit of Wisconsin and other manufacturers of cutting tools and gear boxes adopted the units of measure and distributed devices like this one to assist in their use.
label: Description
content: The one-sided white cardboard rule is printed in orange and black and has eight windows. Two logarithmic scales on the slide are viewed through four of the windows so that the user can convert between yards or feet and meters; centimeters and inches; pounds and kilograms; and tons and metric tons. Two more logarithmic scales on the slide permit conversions between square yards and square meters; square centimeters and square inches; cubic yards and cubic meters; and liters and imperial gallons or U.S. gallons. Below the windows is a scale for converting between Celsius and Fahrenheit temperatures. The rule is marked: REGAL BELOIT. It is also marked metric/inch (/) CONVERTER. It is also marked SWANI PUBLISHING COMPANY (/) P.O. Box 284 • Roscoe, Illinois 61073 (/) 815 / 389-3065.
label: Description
content: The back of the rule has small windows for reading conversions between fractional inches, decimal inches, and millimeters from columns of numbers printed on the slide. Tables of equivalents appear above more windows for reading conversions between inches and centimeters and miles and kilometers. After another table of prefixes and equivalents, instructions for using this side of the rule are provided. More small windows permit conversions between U.S. gallons and liters and cubic feet and cubic meters. At the bottom, the rule is marked: DISTRIBUTED BY (/) C-6862. The back of the slide is marked ©1971, IMPACT, Culver City, Callf. (/) Printed in U.S.A.
label: Description
content: Impact was presumably a printing company. Swani was a division of Regal Beloit that published a few elementary textbooks on the metric system. Compare this rule to 1990.0689.01.
label: Location
content: Currently not on view
place: label: place made
content: United States: California, Culver City
topic: label: Subject
content: Mathematics
label: Subject
content: Rule, Calculating
label: Subject
content: Conversion Chart
setName: label: See more items in
content: Medicine and Science: Mathematics
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content: Metric System
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content: Science & Mathematics
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content: Slide Rules
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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: 1990.3231.01
label: nonaccession number
content: 1990.3231
label: catalog number
content: 1990.3231.01
objectType: label: Object Name
content: slide rule
physicalDescription: label: Physical Description
content: paper (overall material)
label: Measurements
content: overall: .3 cm x 20.7 cm x 8.4 cm; 1/8 in x 8 1/8 in x 3 5/16 in