Aeronautical engineer George Norman Albree (1888–1986) designed airplane components and slide rules. This is an example of his Duplex slide rule, which he intended to be used by grade school children.
IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Aeronautical engineer George Norman ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results