A large round beam rests in a holder behind the back vertical support. At the end is a large wooden disk with evenly spaced holes bored into it. A large hole set into one of the holes would set the tension on the warp.
A large round beam rests in a holder behind the back vertical support. At the end is a large wooden disk with evenly spaced holes bored into it. A large hole set into one of the holes would set the tension on the warp.