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Guenther Witzmann - Austria

GuentherWitzmann-Austria.jpg Rick Robson - USAThumbnailsHirokazu Iida - Japan

Guenter added balls to the pendula which increased their period to 1 1/3 seconds, in order for the clock to, despite this, still tell the correct time he replaced the escapement arbor 9 tooth pinion with one of 12 teeth.
You can see his Sextus here :- https://www.youtube.com/watch?v=JBB8YT68p30