Model 3-B Protractor

Most navigators used chart tables for plotting courses. Plotters such as this allowed them to precisely lay out courses and intersecting lines of position.

Caption:
Used for plotting on larger aircraft, such as bombers and transports.
Type: Artifact
Image Date: 2012
Credit: National Air and Space Museum, Smithsonian Institution
Origin: National Air and Space Museum, Smithsonian Institution
Creator: Dane A. Penland
NASM2012-02121
 
Used for plotting on larger aircraft, such as bombers and transports.