ETACHRON blade to turn the stud - Bergeon

Special tool to turn the stud. The blade of the balance-spring should always be centered by rotating the stud, without deforming the blade.

The play of the balance spring between the regulator pins can be increased or decreased as required by rotating the pinholder block.

Blade width: 2.0 mm
Dimensions (Ø x L): 6 x 63 mm
Bergeon Nr. 16918-EETC
Weight: 3 g