Documentation Relating to GIW Hydraulic Slide Rule

In the mid-twentieth century, engineers designing slide rules often carried out extensive calculations by hand. The documentation for the Georgia Iron Works hydraulic slide rule (2009.0100.01) includes numerous pages of such calculations, as well as four blueprints showing the design of the rule. Correspondence between Danforth W. Hagler, who designed the slide rule, and officials of Pickett & Eckel Company, the manufacturer, is also included. The letters and drawings are dated 1961.
Currently not on view
Object Name
date made
Georgia Iron Works Co.
Physical Description
paper (overall material)
overall: 38 cm x 23 cm x 2 cm; 14 31/32 in x 9 1/16 in x 25/32 in
place made
United States: Georgia, Augusta
ID Number
accession number
catalog number
Science & Mathematics
Rule, Calculating
Slide Rules
See more items in
Medicine and Science: Mathematics
Slide Rules
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Gift of Danforth W. Hagler
Additional Media

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