This Alvin Paral-Liner Mobile Parallel Straightedge is made with 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.
An easy-to-use instrument that combines the functions of a parallel straightedge, triangle, protractor, T-square, and compass in one. One of the most useful and convenient aids for drafting, drawing, and nautical applications. Smooth gliding action to easily make parallel lines without twisting or turning under accidental pressure. Features durable acrylic blade with printed graduations, through-holes at ½" increments for drawing circles, and a comfortable aluminum roller bar with non-skid rubber O-rings for a firm grip on any surface. Individually blister-carded with detailed instructions included.
A multi-purpose drawing tool made from high impact plastic for students, artists, and designers. Graduated in both English and metric. Includes many useful formulas and conversion factors. Draw horizontal and vertical parallel lines with ease. Draw circles, curves, or arcs. Use the built-in protractor to draw angles. Blister-carded, instructions on back.