A professional who tends turret lathe to spot, drill, finish-recess, and rough-post watch barrel bridges. Respnsibilities include:

• Places bridge in nest of quill and turns clamping ring to tighten bridge in place.
• Depresses pedal to start machine.
• Feeds spotter, drill, and hollow mill in order against bridge by pressing indexing button which clicks each into working position.
• Loosens clamping ring and removes completed bridges.
• Verifies dimensions of post and thickness of recess with precision plug and indicator gauges.