Aircraft Clock, 8-day Civil Date Indicator Aeronaval (CDIA) Waltham WWII KC-135 indicating a manufacturing date of

indicating a manufacturing date of 1958

part number 1818-1-A

The knob adjusts the accuracy of the reading by calibrating the instrument to the current barometric pressure as shown in the small window above center

This is a slaved Directional Gyro made by Aircraft Instrument Manufacturing for Aviation Safety

Aircraft Clock, 8-day Civil Date Indicator Aeronaval (CDIA) Waltham WWII KC-135 indicating a manufacturing date ofHere is a fine example of a WWII era CDIA Aircraft Clock, 8 day, 24 hour dial, made by Waltham. According to the Waltham website: Approximately 134. 000 CDIA aircraft clocks where produced and equipped with Walthams famous 37 size, 8 day movement, housed in a black aluminum case secured to the aircrafts instrument panel. The crystal glass was secured by a bezel and gaskets to seal the movement against dust. The bezel assembly enclosed the civil date