Job Description:

• 1) Tends semiautomatic mainspring-winding machine that winds mainspring into shell and lubricates bearing surfaces: Opens chuck, inserts arbor, and fits spring assembly over arbor.

• 2) Depresses pedal that allows winding and oiling mechanism to wind spring around arbor, and oil spring.

• 3) Places barrel over spring by hand and removes assembly from chuck.

• 4) May wind mainspring, using hand-operated spring-winding tool.

• 5) May reverse mainspring to coil spring in direction used in watch and be designated Mainspring-Reverse Winder.