A vintage cockpit clock ACHS-1 (-1) from the USSR. It was produced by "Chelyabinsk Watch Plant" (CHCHZ), Russia.
There are threaded pins on the back that can be used to attach the watch to different surfaces. The watch consists a current time mechanism, a stopwatch mechanism and a flight time mechanism a regulator and controls. The flight time and stopwatch mechanisms work from the current time mechanism and can be turned on and off independently of each other.
A dial with three scales is used to take time readings. Large scale - for counting time in hours, minutes and seconds. FLIGHT TIME scale - for counting flight time in hours and minutes. "SEC" (stopwatch) scale - for counting the stopwatch operating time in minutes. The clock is controlled by two heads.The left red crown is intended for winding the watch and moving the hands, starting, stopping and returning the hands of the flight time mechanism to the initial position. The watch is wound by turning the crown counterclockwise. The head has no reverse rotation. The hands are translated by pulling the crown out to the stop and turning it counterclockwise. The flight time mechanism is started by pressing the crown (until it clicks).
At the same time, in the rectangular opening of the dial, you can see a red signal. The flight time mechanism is stopped by pressing the crown a second time. At the same time, a signal of two colors is visible in the opening of the dial: red and a luminous mass (for watches with index "B"). The return of the arrows of the flight time mechanism to the initial position is carried out by a third push on the left head. In the opening of the dial, one can see the light mass (for watches with the index "B") or a white signal (for watches with the indexes "K" and "B").
The right crown (with an arrow-pointer) is intended for starting and stopping the watch, as well as starting, stopping and returning to the initial position of the stopwatch hands. The watch is started and stopped by turning the crown along the arrow-pointer on it (or against the arrow). Start, stop and return to the initial position of the stopwatch hands are carried out by successive pressing of the head. The clock is in good condition, runs well and keeps time accurately - 3 days testing, accuracy about 20-30sec/day. Tested by a professional watch master.
Both chronographs works well (bottom and upper). Lum is still highlighted brightly. The case is scratched and scuffed in some places. There are some small dots on the dial. Look at all 12 photos.
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We sell only ORIGINAL goods. For our part, we guarantee neat packaging to minimize damage to the goods. BELEON LLC (DE, USA) wish you. The item "Vintage Soviet Cockpit Clock ACHS-1 Chronograph USSR Aircraft Pilot Plane LUM" is in sale since Friday, June 18, 2021. This item is in the category "Collectibles\Militaria\Militaria (Date Unknown)\Air Force".The seller is "beleon_66" and is located in Minsk. This item can be shipped worldwide.