Compass, Direct Reading Magnetic, Japanese Army Type 98 Kou F-82 and then a small triangular

and then a small triangular index pointer which traverses the perimeter of the inner scale

This indicator was installed on the pilots instrument panel of US military aircraft designed with the Low Altitude Bombing System (LABS) used for "Toss-Bombing"

The student aviator is assumed to be training his aim on the lighted spotlit image

used in determining proper elevation and deflection (direction) when operating field artillery weapons

Compass, Direct Reading Magnetic, Japanese Army Type 98 Kou F-82 and then a small triangularThis is a WWII era Direct Reading Magnetic Compass Type 98 "Kou" produced by the Tokyo Aero Indicator Company and used in aircraft of the Japanese Army, such as fighters Type 1 Oscar, Type 2 Nick, Type 3 Tony, Type 4 Frank, and Type 5 Ki 100, according to the Funatsu Aviation Instruments Museum website. See photo of Tony instrument panel showing the location of this compass from a book by WWII Japanese Aircraft researcher Robert Mikesh. The Kou