If you have a Waltham CDIA clock you need
serviced, you will find services and charges listed on the Aircraft Clock
Restorations and Repair Services page.
The Waltham CDIA was used extensively in WWII USN and
Marine Corps aircraft. Its large 2 3/4 inch dial and continuously running
sweep seconds hand was easy to read and the dual mainsprings assured
reliability. This is the clock found in the Corsairs and other
late Pacific theater aircraft.
The movement used
in this clock was extremely rugged and versatile. Variations of
the basic movement were used in everything from automobiles to armored
vehicles and aircaft. The USN kept these in service until the
1980s although I do not know for what applications.
Civil Date changes at midnight. The corrector button short months
is just above the winding knob and is actuated by a simple push with a
pencil point. The movement is 8 days running and is wound
normally. The time is set by pulling the winding knob away from
the case. To increase ruggedness under field conditions, Waltham chose
to forgo the mechanism that holds the knob in the setting
position. A spring applies force to return the knob to the winding
position the whole time the hands are being adjusted. This also
prevented the clock from being left in the hand setting mode which could
adversely affect the timekeeping.
Like the Elgin
and Hamilton 37500 and the USN Jaeger A-10, the CDIA has a 24 hour dial.
Cost of Fully Refurbished
CDIA Clock with unbreakable mainsprings, Certificate of
Performance and 1 year warranty: $575 plus shipping.