A professional who supervises and coordinates activities of workers engaged in spinning yarn. Responsibilities include:

• Reads production schedule for information, such as quantity of yarn, type of fiber, staple length, yarn size, quality and texture desired, and ultimate use of yarn.
• Computes draft required to reduce roving to specified yarn size and drafting gear size to effect draft, using mathematical formulas and tables.
• Determines spacing of drafting rollers according to staple length of fiber.
• Analyzes yarn specifications to determine amount of twist to put into yarn.
• Computes twist gear size, using mathematical formulas and tables.
• Schedules changes in machine setup to produce yarn according to production schedule, issuing change instructions to section leader and machine setter.
• Examines yarn to detect variations from standards.
• Schedules doffing of frames to avoid excessive downtime.
• Trains new employees.
• Participates in setup and adjustment of machines and equipment.
• Performs other duties as described under supervisor master title.