Close-up of the left end of the track shows the threaded wooden screw going through the rail and holding the metal pulley that it adjusts and the nut. Each rail has a separate pulley and threaded screw unit. Bands go around the pulleys.
Close-up of the left end of the track shows the threaded wooden screw going through the rail and holding the metal pulley that it adjusts and the nut. Each rail has a separate pulley and threaded screw unit. Bands go around the pulleys.
