Rigid phenolic construction with a black satin finish. Mobile straightedge affords frictionless operation through the floating action of the nylon rollers mounted on the blade. The rollers retract at a touch, securing the blade for accurate drawing. Acrylic edges are elevated to prevent ink smears and steel ball-bearing pulleys provide smooth movement. Comes with all mounting hardware and installation instructions.
Click here to download the Alvin parallel straightedge assembly instructions in pdf format.
The pictures below are offered as shape references. They are not actual size.