Slide Chart, Slide Selector for Elastic Machinery Steels

Description
This slide chart advertises the properties of the ELASTUF machinery steels manufactured by Beals, McCarthy & Rogers, Incorporated, of Buffalo, New York. It consists of a paper envelope with metal rivets and a paper slide. Lining up an arrow on the slide with a type of steel listed along the top of the front reveals in a window of the envelope a general description of the properties of the steel. The other side of a chart shows the physical properties of that type of steel (its tensile strength, yield point, elongation and reduction) for different bar sizes.
A mark along the bottom right of the back reads: COPYRIGHT 1947 BEALS, McCARTHY & ROGERS, INC. A mark on the slide reads: MANUFACTURED BY (/) GRAPHIC CALCULATOR CO. (/) CHICAGO 5, ILL. (/) MADE IN U.S.A.
For other products of Graphic Calculator Company, see 2000.3029.02 and 2000.3029.13.
Graphic Calculator Company was a slide rule and slide chart manufacturing and design company founded in Chicago in 1940 by Capron R. Gulbransen, and apparently still in business at the time of Gulbransen’s death in 1969. By 1965, the firm had moved to Barrington, Illinois.
Reference:
Obituaries, Chicago Tribune, August 11, 1969, p. A6
Location
Currently not on view
Object Name
mathematical table
date made
1947
maker
Beals-McCarthy & Rogers
Physical Description
paper (overall material)
Measurements
overall: .3 cm x 23.5 cm x 9.9 cm; 1/8 in x 9 1/4 in x 3 29/32 in
place made
United States: New York, Rochester
ID Number
1988.3076.02
catalog number
1988.3076.02
nonaccession number
1988.3076
subject
Science & Mathematics
Mathematical Charts and Tables
Mathematics
Manufacturing
See more items in
Medicine and Science: Mathematics
Mathematical Charts and Tables
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Gift of I. Bernard Cohen
Additional Media

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