Pickett Manual for Model 3 Duplex Slide Rule

This eight-page pamphlet, titled How to Use Model 3 Powerlog Slide Rules, is a supplement to Maurice L. Hartung, How to Use Dual Base Log Log Slide Rules (Santa Barbara, Calif.: Pickett, Inc., 1947). Hartung also wrote this pamphlet, probably around 1947. He explains scales not found on other Pickett models, namely, the extended square root, cube root, and tangent scales. Model 3 also had an extra log log scale (LL0).
This printing was made after the company moved to Santa Barbara in 1964. See the associated items, 1980.0097.01 and 1980.0097.05.
Currently not on view
Object Name
date written
date printed
ca 1965
Hartung, Maurice L.
Pickett Industries
Physical Description
paper (overall material)
overall: 21.1 cm x 13.5 cm x .1 cm; 8 5/16 in x 5 5/16 in x 1/32 in
place made
United States: Illinois, Chicago
place printed
United States: California, Santa Barbara
ID Number
accession number
catalog number
Slide Rules
Rule, Calculating
Science & Mathematics
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 Terry M. Sachs

Visitor Comments

Add a comment about this object

**Please read before submitting the form**

Have a comment or question about this object to share with the community? Please use the form below. Selected comments will appear on this page and may receive a museum response (but we can't promise). Please note that we generally cannot answer questions about the history, rarity, or value of your personal artifacts.

Have a question about anything else, or would you prefer a personal response? Please visit our FAQ or contact page.

Personal information will not be shared or result in unsolicited e-mail. See our privacy policy.

Enter the characters shown in the image.