Sigma-Tek 3-1/8 Restrained Airspeed 40-250Mph 40-200Knt Lit

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 oclock 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.