Airspeed Indicator, Maximum Allowable, Type L-7A w/Mach Limiter, Kollsman 1214DX F-84 This is a Horsepower Indicator

This is a Horsepower Indicator

The gunner has set the target length and range on the sight using the knobs shown

The field of view of the ball turret gunner was actually quite poor and it wasn't difficult for the gunner to lose orientation with respect to the direction of the aircraft

reflector-type sight designed for use in power turrets and cockpits

Airspeed Indicator, Maximum Allowable, Type L-7A w/Mach Limiter, Kollsman 1214DX F-84 This is a Horsepower IndicatorThis is a Cold War era Airspeed Indicator, 0 650 Knots, Maximum Allowable, Type L 7A, made by Kollsman and used in aircraft of the US Air Force such as versions of the fighters F 86 Sabrejet, F 80 Shooting Star, F 84 Thunderjet, F 89 Scorpion, F 94 Starfire, trainer T 33, and versions of bombers B 47 and early B 52s. The main pointer rotates clockwise as the airspeed increases. The horizontally rotating drum above center is graduated in 2 knot