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, http://www.datalizer.com/about-us/; Lance Gould, "The Lenses And Legacy Of New York's Picture Newspaper," New York Daily News, January 25, 2002, http://articles.nydailynews.com/2002-01-25/entertainment/18195567_1_photographers-gallery-exhibit-exposed.