Alvin Paral-Liner
What We Like About This Parallel StraightedgeThis straightedge is made with very durable phenolic resin Plexiglas edges. Choose among five sizes of this parallel straightedge with nylon rollers. The installation is easy and clearly explained in the included instructions. Parallel straightedge with floating nylon rollersIncludes mounting hardware and instructions. Rollers retract with simple touch, securing blade to surface. Plexiglas edges to prevent smears. Smooth-running ball-bearing pulleys along nylon rollers.