Jean_LAMESCH_Sliderules_Collection_BOX

1773_CARROL_MB2A_flight_circular

The US CARROL MB2A navigation computer from 1956. Plastic composite disc (ca. 108mm diameter) , one rotating disc each side with cursors and cutout windows. The smaller picture shows the front, the larger the back side. Plastic pouch with manual inside. Link to manual here. Was also used in the 1940 by female operators at the MIT to translate data from wind tunnel measurements.