A professional who tends machine that inserts lease strings to keep warp strands separated in specified arrangement to facilitate drawing-in. Responsibilities include:

• Positions warp beam in holders, using hoist.
• Pulls warp ends over lease rod and turns rod to make warp threads taut.
• Places cone of string on holder and draws string through guides and needle to thread machine.
• Starts machine that raises and lowers warp threads and inserts string to keep threads in place and prevent tangling.
• Observes counter on machine to ensure that specified number of warp ends are wound on beam.
• Removes warp ends from rod, turns warp beam to rewind ends, and secures ends with tape.
• Removes warp beam from holder, using hoist.