There are some precision pendulum clocks in the world, but manufacturing a mechanic precision clock which deviates only a few seconds every month from the actual time requires many constructive and constructural highlights.

The largest precision pendulum clock of the world

The essential basic data of such a clock are amongst others a temperature- and air-pressure-compensated precision pendulum, a constant force via weight, and a gear train with precise bearings and precision clock escapement.

 Wouldn’t it be a fascinating challenge to construct such a giant precision clock, which is a 6.25-times enlargement of a Sattler precision clock that has been built over 1000 times yet? Actually this was the idea of the manufactury-owners, Mrs. Stephanie Sattler-Rick and Mr. Richard Müller. Of course there is no better moment than the move into the new company building in Gräfelfing, Lohenstr. 6 and the simultaneous 50 years anniversary of the manufactury Erwin Sattler. The construction plans and production details were established by the master clock-makers of the manufactury Erwin Sattler. The building time of the clock was 2 years.

 The entire mechanic of the clock is located in a 8.80m high, 2.40m wide and 1m deep steel case exactly above the entry of the new company building in a 12 m high steel tower. With 13 huge glass panes glazed and illuminated by night, the tower offers a fascinating view over the regulator clock dials with 160cm diameter and the 3 blued hands, which show the seconds, minutes and hours true to the style of old observatory-clocks each on separated clock dials. The complex in brass milled and afterwards gold-plated gears and the smooth Graham-escapement can not only be viewed through the aperture in the clock dial, but also through the side windows.

 True to the philosophy, a pendulum clock is as precise as its pendulum, the pendulum consists of a mixture of various materials. Carbon, brass, stainless steel and aluminium in precise  dimensions guarantee the keeping of the 7.80m long pendulum’s frequency of 0.2 Hz (5sec. per pendulum oscillation) even during variations in temperature. Once a week the precision clock is wound mechanically from the inside of the house by a crank. During the period of winding, the movement is powered by an endless-rope winding-mechanism of Huygens, which is charakterised by two different winding weights.

 The building and investment of Erwin Sattler radiates not only a time signal for Germany but as well far beyond.

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