3-hole flange, mounting 2.54" bolt, Circle 1.45" diameter holes.

Standard equipment in most production aircraft. Operate on any DC voltage from 12 to 24 volts. These solid-state hour meters are recommended for use on aircraft because they start or stop instantly when power is applied or removed. Furnished with mounting hardware. If meter is connected improperly it will not operate but meter will not be damaged. The running indicator indexes every 6 seconds.