The THOMMEN CM30 is a Swiss Made
precision, multi-functional chronometer de -
signed to operate under the most stringent
operating conditions in civil and military aircraft.
The CM30 is designed according the
latest civil and military avionics standards. It
features a three line display with light digits
on dark background (negative image). It
supports the simultaneous indication of a
combination of clock- and timer-function
readings and has several day/night mode
backlight options including NVIS A and B
compatibility. The time base is supplied by a
dedicated internal power reserve to provide
the timekeeping function even when the aircraft
power is removed.