Links 1 and 2 are connected by turning pairs A and B to the base, and their turning axes are perpendicular but do not intersect. Links 1 and 2 contact each other through point C and plane a which intersects the axis of turning pair B. Point C of contact of link 1 with link 2 is located at a constant distance from the turning axis of link 1.
$512$SL,CL$