A professional who weighs roving samples to detect variation in weight produced by tape condensers of woolen carding machines. Responsibilities include:

• Positions jackspool of roving in winding position and threads roving ends from spool through guides and takeup roller.
• Sets yardage counter at specified yardage and turns crank to wind sample of roving.
• Weighs sample on grain scales and records weight on chart.
• Plots weight of each end of roving produced by single carding machine on graph paper and compares graph with standard graph to isolate variations in roving.
• Reports variations from standards to machine fixer.