Ammunition Reserve Counter, B-36 Peacemaker P-3 Orion part number 40091 with a

part number 40091 with a manufacturing date of May 1965 for an order by the US Air Force

was used in a variety of aircraft of the Japanese Army

signaling to the Turret Trainer if the 'laying'

According to its spec sheet from the Army/Navy Index of Aeronautical Equipment

Ammunition Reserve Counter, B-36 Peacemaker P-3 Orion part number 40091 with aThis is a US Air Force, Cold War era electromechanical Ammunition Reserve Counter, used to display the rounds of ammunition remaining in reserve, up to 999 rounds, as the aircraft's guns have been fired. The wheel at the left of the digit display counter is used to set the total rounds loaded into the aircraft. The small protrusion right of the digit display counter was used to reset the counter to zero once pressed, but it is either non functional or