Sigma-Tek Restrained Airspeed Indicators

Description

These airspeed indicators have restrained 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: Airspeed range markings are optional.Note: Lighted Instruments do not include lamp trays, see accessories.