Extremely Rare And Important Fedchenko Precision Regulator Clock

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Extremely Rare And Important Fedchenko Precision Regulator Clock:
$55000.00

Possibly the most complete and original Fedchenko even down to the original baby blue paint and equipped with temperature air pressure and other accessories. Feodosiy Mikhailovich Fedchenko (1911 - 1989), Mendeleevo, Russia High Precision Timekeeper, model AchF-s, No. 15, with control and two slaves, 1970

Made at the All-Union Scientific Research Institute of Physicotechnical and Radiotechnical Measurements, USSR, in 1970.Exceptionally fine and very rare astronomical, constant pressure, isochronous suspension, temperature compensation, short central impulsing, battery powered, master pendulum observatory regulator beating seconds, with simple change from mean solar time to sidereal time, considered to be the world's most accurate pendulum clock operating in a vacuum chamber, with an average accuracy of approximately 0,002 seconds per day.

Cast-iron bracket supporting constant pressure steel cylinder with heavy bell glass jars at the top and bottom, fastened to a steel frame holding a steel bar with the dial on the right, small bracket at the back for the mercury oxide battery of capacity 2.5 amps hour providing power for over 3 years of continuous working, and electronic control unit. D. White with tapered indexes and fifteen-minute Arabic markers. Sharp point tapered hands. M. Consists of 10 kilograms invar pendulum with 2 seconds period, its suspension, electro-magnetic impulse delivery device, pressure controlling baroscope, microscope for amplitude checking, battery power module and secondary clock system with its own battery, switching from mean time to sidereal time by moving a small weight in the pendulum. Signed on front at the suspension.

15.75 x 16.25 x 53 inches. Any questions617 let’s discuss834 specifics and features9354.

Best Regards Paul