William Powell's Slide Rule

William Powell's Slide Rule
Zoom in on the image Zoom    Download this file Download

William Powell used this slide rule while teaching courses on aeronautics at the Bessie Coleman Flying Club.

Photographer:

Eric Long

ID #:

2011-00609

Source:

National Air and Space Museum Archives, Smithsonian Institution

Copyright/Owner:

Smithsonian Institution

Terms of Use:

Smithsonian Terms of Use
For print or commercial use please see permissions information.