Erwin Sattler – Opus Perpetual Precision Pendulum Clock – Perpetual Calendar

This truly majestic precision pendulum clock is an absolute masterpiece of craftsmanship. It impresses with its size, its special design and its modern aesthetics. The wall clock Opus Perpetual from Erwin Sattler provides comprehensive information and gives precious time an extremely attractive face, as it complements the three centrally positioned hands for hours, minutes and seconds with an equally beautifully designed astronomical trio for the day of the week, month and date.

Here’s how the perpetual calendar of the Caliber 2051 works: In the Caliber 2051 from the Erwin Sattler Manufacture, the centrally located hour wheel drives the calendar mechanism. Because it rotates once around its own axis every 12 hours, the rotation speed needs to be halved only once every 24 hours to ensure the correct advancement of the calendar indications.

Opus Perpetual – Perpetual Calendar

A so-called month cam is required to do justice to the special features of the Julian calendar with different lengths of month and a leap year after three normal years with 365 days. Raised and recessed areas provide the main gearshift, which scans the edge of this very specially shaped component, with information on the respective month length. Because February lasts three times 28 and then 29 days, a four-year wheel is also required, which rotates 90 degrees each year in a section of the month cam.

At the end of the month, the main shift lever interacts with a stepped worm disc. In months with 31 days, indicated by raised spots on the month cam, the beak of the main gearshift lever falls over the step as normal, thus advancing the date and month hands by one position.

However, if a month has fewer than 31 days, the rear end of the main shift lever plunges correspondingly deeper into the month cam. As a result, it extends further and the beak falls over the aforementioned step after 30, 29 or 28 days, thus causing the switch to advance to the first day of the following month. The day of the week and moon phase display remain unaffected. The calendar mechanism moves them forward by one position each day.

We offer a 15-year warranty on every Erwin Sattler clock and deliver them at the time of your choosing. We deliver them personally to your home using our own vehicles, and include installation and setup.

With the purchase of this clock, you receive complimentary in-home customer service, whereby, in the event of a repair or other service work, we will personally pick up the clock from your home and have it repaired or serviced by the respective manufacturer.

“A no-obligation trial fitting at your home. We’ll stop by with a selection of different watches and advise you on the spot. A poster or a picture is no substitute for a real watch.”