AChS-1B -1B Military Air Force Clock fully mechanical Aviation Watch USSR. The clock fully mechanical is used in a control panel of jet military planes MIG-19, MIG-21, MIG-23, MIG-29, strategic bombers, Helicopter and transport planes. This clock is fully mechanical, wind up item. It does not need any power source to be operated!These clocks have been designed to. Withstand speeds of Mach 3 / 1800 mph (2900 km/h) and altitudes of up to 100,000 feet (30 km). These robust timepieces are built to keep time. Flawlessly while pulling 6G's! Built-in 27-volt heater ensures operation even at -60 °C (-75 °F). Each measures approximately 3 inches (8 cm). In diameter by 2 inches (6.5 cm) deep and feature a two-day / three-day precision clock movement with 26 jewels, inside an all-steel, dustproof. The clock consists of mechanisms of current time, flight time and stopwatch (30 min). Duration of working hours after full spring starting 2 days.
Stroke accuracy ± 20 s/day. Operating temperature range ± 60 °.Frequency of clock start once every two days. Vibration strength at acceleration 2 g (20m/s) is provided in the frequency range 18... Overall dimensions of 8591.491.4 mm. Weight of hours: 655 gr. Condition: Used is in good working condition, totally are in working order and shows the exact time (please, check all pictures as they are part of the description). If you have any questions - fell free to contact. The item "AChS-1B -1B Military Air Force Clock fully mechanical Aviation Watch USSR" is in sale since Sunday, May 30, 2021. This item is in the category "Collectibles\Militaria\Militaria (Date Unknown)\Air Force". The seller is "natapic86" and is located in Cherkassy. This item can be shipped worldwide.