Historical information

1945 Slide Rule US Army Air Force from Prof. Allan Bromley.

Significance

Works by adding Angular moments together to find centre of gravity (COG) of a plane (adds bombs, ammunition and crew on board).

Physical description

Brown Leather Case with 'Slide Rule' inner.

Inscriptions & markings

Load Adjuster, Property of US Government.
102630 on case. 81629. Airplane serial No. 44-4-1195, Model B-24J