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A. Lange & Söhne

I looked in the instruction book for the Langematik Perpetual winder...

 

This is a first-generation winder with 10 settings. Lange recommends using Position #1 (lowest setting) on this winder for their Langematik movements. In that Position #1, the winder runs for 5-1/2 hours per day (840 revolutions per day). In contrast, just FYI, Position #9 runs for 9-1/2 hours per day (1450 revolutions per day), and Position #10 runs constantly for 24 hours per day (3670 revolutions per day). I might be mistaken, but I think it rotates only clockwise.

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