Here’s a Hermle 400 day clock form the 1950s that I repaired recently. Hermle 400 day clocks are not very common. I get many Schatz and Kundo 400 days, but see  a Hermle only every couple of years.

The dial has a 3 15/16 inch minute track, and the minute hand is 2 inches long from center to tip. The original instructions are with the clock.

The pivots were rough on this clock, and I think they left the factory this way. I polished them all.

Repair job 5589. Horolovar back plate number 1103. Suspension unit 25A, with fork raised to prevent fluttering (5.2 mm space bvetween upper block and fork). 0.0033 inch Horolovar suspension spring.

 

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