The balance is made from alloys of nickel silver, brass or beryllium bronze. In the mechanism, it should be on the axis in a balanced position, special devices are used for this operation.
Jean Widmer-Steiner, Jema-Apparate, Poising tool
These devices perform the same function as the Poising tool, only at a more professional level. A balance wheel must be adjusted so it has no heavy spot on the rim or the watch will run at differents rates in different pendant position.
This device is for remove the balance axis, at the same time it is guaranteed that the balance spokes will not bended.
Luthy Device for determining the length of the spiral Spiralabzählmaschine
Device for determining the length of the spiral, as well as the frequency with which the balance should fluctuate.