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Mainspring winder handle dimensions

TheodoreLaz
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TheodoreLaz New Member

TheodoreLaz

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Greetings, there is a couple of years that i have started as a  hobby to work with the watch repair. As you know the bergeon mainspring winder set is too expensive and for that reason i tried to find something more affordable. The last week i manage to buy from an auction a swiss set that looks exactly as the bergeon but it has only the first 7 sizes of winders. I would like to ask if you know the inside diameter of the bergeon handle because i want to buy an other size of those winders and i dont know if this fits to my handle. Thank you in advance for your interest and your understanding. 

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