Attach cap jewel plates to train and balance bridges.
What does a Cap-Jewel Plate Assembler do?
Attaches cap jewel plate to train and balance bridges: Places bridge in holding fixture and positions cap jewel plate over bridge, aligning cap jewel with hole in bridge. Inserts minute screw into hole with tweezers and screws plate to bridge. Observes minute parts with loupe. May insert screw in hole of balance bridge to facilitate subsequent fastening of hairspring stud.