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| | Feodosii Mikhailovich Fedchenko Antique Clock |
 | | See many more antique Feodosii Mikhailovich Fedchenko clock prices, photos and descriptions at AntiqueClocksPriceGuide.com |
 | | High Precision Timekeeper; USSR, 1970 High Precision Timekeeper; Feodosii Mikhailovich Fedchenko, model AchF-3, No. 25, made at the All-Union Scientific Research Institute of Physicotechnical and Radiotechnical Measure-ments, USSR, in 1970. |
 | | Exceptionally fine and very rare astronomical, constant pressure, isochronous suspension, temperature compen-sation, 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, with an average accuracy of approximately 0,002 seconds per day. |
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