Post Instruction Manual for Versalog Slide Rule

In 1950 and 1951, three Illinois Institute of Technology engineering professors participated in the development of the Versalog slide rule, manufactured by Hemmi of Tokyo, Japan, for the Frederick Post Company of Chicago. E. I. Fiesenheiser, R. A. Budenholzer, and B. A. Fischer subsequently prepared this 115-page hardcover volume explaining the slide rule's capabilities. They covered the care of the instrument, its twenty-three scales, multiplication and division, squares and cubes, exponentials and logarithms, and trigonometric operations. Each professor also contributed a chapter on applications in his specialty: civil, mechanical, or electrical engineering.
This copy is stamped inside the front cover and on the edges: WILLIAM KRUTZ ESQ. See 1978.0800.01.
Reference: E. I. Fiesenheiser, The Versalog Slide Rule: An Instruction Manual (Chicago: The Frederick Post Company, 1951),
Currently not on view
Object Name
date made
Frederick Post Co.
Frederick Post Co.
Physical Description
paper (overall material)
overall: 21 cm x 14.7 cm x 1.2 cm; 8 9/32 in x 5 25/32 in x 15/32 in
place made
United States: Illinois, Chicago
ID Number
accession number
catalog number
Slide Rules
Rule, Calculating
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 William K. Krutz
Additional Media

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