What is this board given to world war II pilot?
The photo in the question is a screenshot from the movie "Midway"(2019).

The board is a Mark 3A Plotting Board used for navigation by pilots flying from U.S. Navy aircraft carriers during World War II.  It can be seen carried by various SBD Dauntless pilots in this scene from the movie "Midway" (2019) from 0:24 to 1:07.

Photo credit: National Air and Space Museum, Smithsonian Institution


Plotting Board Instructions



Photo credit: National Air and Space Museum, Smithsonian Institution