Datalizer Universal EnglishSI Converter Slide Rule

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This white rectangular cardboard rule is held together with four metal rivets. The front has logarithmic scales for making measurement conversions for length, mass, area, and volume. A chart for converting temperatures runs along the bottom edge. The top is marked: THE NEWS (/) NEW YORK'S PICTURE NEWSPAPER Universal ENGLISH/SI (metric) Datalizer. The bottom is marked: © 1976 datalizer by DATALIZER SLIDE CHARTS, INC., Addison, IL 60101 PRINTED IN U.S.A. FORM NO. EM2.
The back has charts for converting between cubic meters and cubic feet; gallons and liters; miles and kilometers; inches and centimeters; and fractional inches and millimeters. A table of miscellaneous conversions appears in the center of the back.
Around 1960 a former employee of the Perry Graf Corporation (see 1979.3074.03) established Datalizer in Addison, a Chicago suburb. The company made this promotional rule during a time of considerable interest in adopting the metric system in the United States. The New York Daily News used the "picture newspaper" slogan between 1920 and 1991.
References: "Slide Chart Specialists," Datalizer Slide Charts,; Lance Gould, "The Lenses And Legacy Of New York's Picture Newspaper," New York Daily News, January 25, 2002,
Currently not on view
date made
Datalizer Slide Charts, Incorporated
place made
United States: Illinois, Addison
Physical Description
paper (overall material)
metal (part material)
overall: .2 cm x 20.7 cm x 8.5 cm; 3/32 in x 8 5/32 in x 3 11/32 in
ID Number
catalog number
accession number
Credit Line
Gift of John White
Rule, Calculating
Conversion Chart
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Measuring & Mapping
Slide Rules
Metric System
Data Source
National Museum of American History


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