Instruction Manual for Pickett & Eckel Deci Log Log Slide Rule

Instruction Manual for Pickett & Eckel Deci Log Log Slide Rule

Usage conditions apply
This 32-page booklet was received with 1979.0601.02. Its citation information is: Maurice L. Hartung, How to Use the Deci Log Log Slide Rule (Chicago: Pickett & Eckel, Inc., 1947). Hartung, a University of Chicago professor and consultant to Pickett & Eckel, provided a basic overview of mathematical operations on the slide rule. He then explained placing the decimal point; the inverted scales; scales for squares and cubes, logarithms, and trigonometry; and solving problems using multiple scales. He next described the log log scales in a section that has several diagrams of slide rules.
A pink paper sheet on caring for the slide rule is inside the booklet. A previous owner has written in a few corrections, including an updated population of the United States of 175 million in 1957.
Currently not on view
Object Name
date made
Hartung, Maurice L.
place made
United States: Illinois, Chicago
Physical Description
paper (overall material)
overall: 21.2 cm x 13.7 cm x.2 cm; 8 11/32 in x 5 13/32 in x 3/32 in
ID Number
accession number
catalog number
Credit Line
Gift of Frank M. Graves
Rule, Calculating
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Slide Rules
Data Source
National Museum of American History
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