A professional who performs any of following duties at calendering machine to facilitate coating, imprinting, or forming rubber sheeting or rubberized fabric. Respnsibilities include:

• Changes fabric rolls and roll shells, using overhead hoist, on letoff racks and windup racks. Threads material through machine.
• Observes operation to detect faulty calendering.
• Sets yardage counter.
• Turns handwheels, moves lever, or presses buttons on control panel to adjust sheeting tension and windup speed.
• Prepares and attaches identification tag to calendered roll.
• May splice uncoated roll to end of roll in process inserting gum strip between ends and vulcanizing in bar splice press.
• May read yardage gauge and compare weight for conformance to specifications.
• May relieve calender operator.
• Performs other duties as described under helper master title.