USSR MIG-29 Air Force Chronograph ACHS-1
The clock is used in a control panel of military jets MIG-19, MIG-21, MIG-23, MIG-29, strategic bombers, helicopters and URSS transport planes.
The clock is controlled using two heads (buttons); the Crown (red) serves to wind the watch and translate your hands; starting head (with an arrow on it)-to start and stop the clock, as well as to reset and start the stopwatch.
The clock is turned by turning the Crown counter-clockwise until the failure. The head has no reverse rotation. A complete plant ensures that the watch works for three days. For precision, the watch should be wrapped once a day.
Calibre mechanism 76 mm. The number of Ruby Stones is 20. The average daily race at a temperature of (20 ± 5) ° C ± 40 S. The balance fluctuation period is 0.4 s. Overall dimensions are 085x 91.4 x 72.1 mm. The probability of faultless operation for 2000 hours at a confidence level of 0.8 is 0.92. Operating conditions: Ambient temperature-20... + 60 °, relative humidity 95% at a temperature of (20 ± 5) ° С. Vibration in frequency range 18... 80 Hz with acceleration of 1.5 g is allowed.
Overall dimensions of the case watch:
Height 8.5 cm
Width 8.5 cm
- Aviation Clock АЧС Chronograph-1
- Estimated Period
- Country of Origin
- Good condition - used with small signs of aging & blemishes