First Elevator Jaw Line Stop
The first elevator jaw line stop, which prevents the matrices from twisting or falling out while the line is being carried to the vise or the top guide, is found in the first elevator jaw, and is held by a clamp, spring, and nut.
The outer end of the line stop is cut away so as to clear the vise jaw, on all models except 1 and K. Always have the cut on the under side; if reversed it would strike on the vise jaw and not allow the first elevator to descend the full distance.
The inner end of the line stop should set against the first matrix on the left end of the line after the line has been justified. Do not set the clamp lock-nut tight or it will not allow the line stop to move when changing to a longer measure.