Rotary plates GN 900.5 allow rotation of one of the adjustable slide units at an off-set angle to the other. This possibility offers an additional axis configuration.
The alternative adaptor consists of two plates connected together in the center so they may be rotated. The lower plate is clamped to the lower sliding part, while the upper one is clamped to the stationary base of the upper sliding unit.
All parts required are included.