Knee Map Holder US Navy T93-H-202500 1948 AR-234 Here is a WWII-era Bombardiers'

Here is a WWII-era Bombardiers' Information File published by the US Army Air Force May 1945

When translated

two remote controls are provided and

among others

Knee Map Holder US Navy T93-H-202500 1948 AR-234 Here is a WWII-era Bombardiers'This is an original Knee Map Holder as used by some pilots of the US Navy post WWII. According to the accompanying bulletin, the board is strapped to the pilots left leg with the map inserted between the plastic panel and the aluminum frame. There is a compass rose mounted to a flexible arm that can be positioned anywhere over the map. A small spring loaded chain can be extended around the center of the compass to the desired course to determine the