Aerial Chronometer Observatory
Accurate Timekeeping

When accurate time is required at all altitudes, this chronograph automatically adapts to changing altitudes immediately. No user adjustments and the time is constantly displayed.

The internal heater creates a constant environment which means automatic stabilization. This self-adjusting features relieves the operator of much of the tedium of high altitude timekeeping. Operation is very quiet.

The term "Aerial Chronometer" became popular in 1930 when the United Lead Company needed a practical method for instrumenting their metallic balloons. The flight time of these balloons was finite which demanded precision throughout the flight envelope. Later, the Air Force of Monaco established the current brick shape.
For Stratospheric Time

The high altitude vehicle shown in the photograph above is being launched from a special gossamer-based unit. All the components are stabilized by custom binary gases. Note that the chronometers can be installed inside or outside of the balloon pod.

By use of such an independent device which works apart from normal research activities users can concentrate on activities that will yield more useful groups of data. Many veteran timekeepers have reported excellent reproducibility of these automated collection units.

Most users state there chronometers have been used hundreds of times without the requirement for recalibration or testing.
Clock Package - Insulated  
     Simple Field Adjustment