What Should Amplitude Be??
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By Neverenoughwatches · Posted
The tools shown are all roller removers that is the only description, there are also prices quoted from 1899 the date of the catalogue. The 4517 is the tool you and I have, i think i have 3 of them different sizes and also 2 of the 4516 tools. The roller sometimes needs to be removed so different tasks can be carried out to the balance ie. fitting a new staff. Always mark the position of the ruby pin so you can reposition the roller in the correct place. Its position can be worked out but its much easier to mark it before removing it. Most folks preference is to remove the hands with levers, some may like the correct presto tool. -
By Neverenoughwatches · Posted
If someone has used a cylinder for an arbor Hector would have spotted that for sure. I'm amazed it could even move, it must have to get to that state . -
By nevenbekriev · Posted
Guys, I will suggest to do as watchmakers do when they make balance staff for unknown movement and no original staff in it to make measures at all. First thing to do is to determine the size A. This is done by putting the balance cock in place and measuring the distance between tops of the top and bottom cap jewels. Then measuring the thickness of the cap jewels and subtracting the sum from the distance between tops gives the size A. For measuring the size B it is needed to fix a 0.15 - 0.2mm plate on top of the pallet fork cock with some rodico, then measure the distance from the top of the plate to top of the bottom cap jewej and subtract the thickness of the cap jewel.
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