Finer Job Description:

Attaches balance wheel and hairspring assembly to watch or clock movement, using handtools: Positions balance wheel and hairspring assembly between balance stud and balance screw of watch or clock movement assembly, using tweezers. Tightens balance screw to secure balance wheel and hairspring assembly to movement, using wrench. Inserts end of hairspring through eye (slot) of regulator and into hole of hairspring stud, and inserts hairspring wedge into hole of hairspring stud to secure end of spring to stud, using tweezers. Engages impulse pin to pallet to activate movement, using tweezers. Oils specified parts of watch or clock assembly, using oil-filled hypodermic needle.