Eta 255.111 Two Piece Stem Technical Drawing
Technical drawing of the two-piece stem assembly for ETA 255.111 and 256.111 watch movements. Illustrates three components—Clutch Wheel (407), Inner Stem (405.4), and Outer Stem (964)—with their relative positions and engagement points. Two versions are shown side by side, allowing direct comparison between caliber configurations. Essential reference for watchmakers performing maintenance, repair, or reassembly of these stem mechanisms and understanding how the clutch wheel interfaces with both stem pieces during operation.
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Document Details
- Format
- Pages
- 1
- Size
- 581.4 KB
- Category
- Watchmaking