Bergeon Platax No. 2677 How to Guide.pdf Bergeon Platax No. 2677.pdf Background In the old days, before shock protection, I’m sure replacing balance staffs was one of the most common tasks for a watch repairer. They probably replaced several staffs every day. There are many ways to remove a balance staff. One very convenient and quick method is to use a Platax tool. However, this method is considered a destructive method by some repairers, meaning you can only replace the balance