Modern DOUBLE DIAL CALENDAR CLOCK

Modern DOUBLE DIAL CALENDAR CLOCK
The wire spring on the feburary. cam will come loose often.The position is
critical~ Won’t advanced the month if its too shallow; and advances the month on
each day if its set too deep. The lift of the trip mechanism is also critical; it must be
just high enough to change. Also the lift pin on the trip mechanism comes loose
often. the double ratchet spring on advance shape is absolutely critical. Month Advance
must be flat on all surface of Tooth.