Hi, I have some experience servicing pocket watches, so a friend asked me to look at his New Master 100 day clock. He said got it from his brother in the 60s/70s and it never ran. It was fully wound when he gave it to me. I released the main spring, oiled it and set the beat. I was only able to wind it about one full turn. It's running and keeping decent time. My question is: How do you wind one of these fully? There is only a knurled post to wind it. Even wrapping it with rubber, I was only able to get, maybe, one full turn. Is there a tool? Is there a problem with the winding mechanism? Any info will be appreciated. Thanks.
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