by Konstantin Chaykin
The Moscow Computus Clock of the «Konstantin Chaykin» Manufacture is recognized as the most complicated clock ever built in Russia.
The overcomplicated clock movement is assembled from more than 2500 parts and it activates indicators on 4 dails. The «Moscow Computus Clock» is equipped with an incredible complication – Orthodox Easter date indication module. In total, the clock has 26 complications and functions. That was the first time when Konstantin Chaykin used analemma module, which shows the movement of the Sun across the sky during the year. The «Moscow Computus Clock» may even be regarded as a real masterpiece of high watchmaking. It took several years to create conception, develop and assemble the clock movement with the case, decorated with semiprecious and decorative stones.
“The complexity of Moscow Computus Clock is obvious: visually you will easily find indication of time in hours and minutes, Orthodox Easter date, perpetual calendar with 4-digits year indicator and power reserve indicator, orbital moon-phase indicator combined with worldtime function, unique analemma dial combined with indication of sunrise and sunset time in Moscow, and duration of day and night, dial with star-map in Moscow, sidereal time, equation of time, seasons and tourbillon used as small seconds hand. The movement runs for 10 days, it is equipped with special visual indication for last two days of power reserve. There is one more – hidden – treasure, the clock incorporates acoustical reminder of critically low level of power reserve. Special gong rings once every two minutes when there is just one day of power reserve left.”
“The «Moscow Computus Clock» may even be regarded as a real masterpiece of high watchmaking. Its movement is the most complicated mechanical device designed just for one hand showing Easter date, and in fact the rest clockwork was build around it, even it represents the rest 25 functions of 26 in total. Computus mechanism alone takes no less than three hundred parts, including three stepped cams and differential gear calculated to perfectly operate until the year 9999, final year for Konstantin Chaykin’s algorithm, when additional adjustment will be necessary. Computus mechanism sleeps throughout the year, and wakes up just ten minutes prior to the start of new year. It is one of the most astonishing horological function lasting couple of minutes of 525,600 minutes composing a year: Easter hand leaves Easter date of the previous year, goes deep to the left and then arises, slowly approaching Easter date of the new coming year. The mission is completed.”
“There are 25 functions more, and surely one of the most spectacular is unique analemma
dial. “I have been thinking about the analemma complication for 9 years”, notes Konstantin Chaykin. “For all these
years, no matter what I had been working on, I kept the dream to incorporate intriguing astronomical phenomenon
into clock. During 9 years, I invented several variations of analemma mechanism, and the most elegant technical
solution I have decided to put into Moscow Computus Clock”. The analemma dial is really intriguing, it shows exact
position of Sun in the sky if you will capture it in course of the year every day in the same moment if local time, i.e.at 12:00. This complication isn’t rare. In real it is unique because Konstantin Chaykin was the first who invented it and used for the first time in Moscow Computus Clock.”
“Finally we should mention one-minute tourbillon, properly set in clock in vertical position, very important part of the movement simply because Konstantin Chaykin had started with this complication his career in watchmaking art. The first tourbillon clock he built in 2004.”
“The supercomplicated movement of Moscow Computus Clock was set into nearly complicated artisanal case made with
extensive use of semiprecious stones and composed of more than 2,500 parts carved from stone. The starting point of
clock design was St Basil’s Cathedral, the pearl of Russian architecture and the world’s well known symbol of Moscow.
The detailed work on the case of the clock took months of work of one of the best Russian artisan of stone mosaic. The case is covered with pieces of plenty of precious and semi-precious minerals and stones. Tricky stone setting technique means that artisan could elaborate just a few pieces of stone decoration a day, as every detail required six to seven finishing touches after each facet was perfectly formed and polished.
T03-1 by Konstantin Chaykin manufacture
175 x 164 x 160 mm
brass, steel, duralumin, bronze, gold, lapis lazuli, hard alloy, sapphire, diamonds
Power reserve 10 days
440 x 290 x 320 mm
brass, steel, duralumin, silver, mineral glass, malachite, marble, lapis lazuli, jade, cacholong, coral, jasper, nickel coating, gilding, patination, stone carving, Russian stone mosaics