Airspeed / Mach Speed Indicator, 80-850 Knots, 0.4-2.5 Mach, F-8 Crusader H-21 The specifics of the modifications

The specifics of the modifications is not known

The manual reviews aircraft engine performance and the effects of different fuels and fuel characteristics

and the vertical bar deflects to give an appropriate "fly right" or "fly left" indication

3 inches wide

although only one remote control functions at one time

Airspeed / Mach Speed Indicator, 80-850 Knots, 0.4-2.5 Mach, F-8 Crusader H-21 The specifics of the modificationsThis is an Air Speed Mach Speed Indicator as used in the Viet Nam War era US Navy Fighter Vought F 8 Crusader. Made by Bendix, part number 1454 62A B62 1. See photo of indicator on the F 8 panel from its flight manual dated Sept 1978. The indicator displayed airspeed from 80 850 knots, and mach speed from 0. 4 to 2. 5 mach. Airspeed is displayed from 80 200 knots on the scale from 1 4 o'clock, and then from 80+ knots on the center inner scale window