Single Scale Airspeed
These airspeed indicators have unrestrained movements.These instruments are actuated by ram air and ambient atmospheric pressure obtained from the aircraft pitot and static pressure systems. A moveable pointer and a fixed dial indicate airspeed with the zero index at the 12 o’clock position. Temperature compensation is internal and there is no external zero adjustment. Pointer damping is internally adjustable.
Note: Designed to meet the requirements of FAA TSO-C2b for a Type I instrument.
Dual Scale Airspeed EA5171
Dual Scale Airspeed EA5172
Dual Scale Airspeed EA5173
The thread for this unit is 1/8 NPT.