Para-Liner Parallel Straight Edges Float Effortlessly on Tables with Rollers

Para-Liner Parallel Straightedge have a rigid phenolic construction with a black satin finish. The mobile parallel straightedge affords frictionless operation through the floating action of the nylon rollers mounted on the blade. These parallel bars are an excellent choice for drafting tables and drafting boards. The rollers retract at a touch, securing the blade for accurate drawing. Plexiglas edges are elevated to prevent ink smears and steel ball-bearing pulleys provide smooth movement. Comes with all mounting hardware and installation instructions.