A professional who tends polishing machine that smooths and imparts specified finish to pivot (staff) ends of pinions and arbors. Responsibilities include:

• Pulls spindle handle to insert and position pinion in holder of workpiece.
• Depresses pedal to start felt-wheel lap rotating across pivot end to polish ends.
• Charges wheel with lime stick as needed.
• Inspects ends to detect defects, such as burrs and rough surfaces, using loupe.
• Performs minor adjustments to machine.