Beveled edges bring your pencil or pen right against the paper surface, eliminating the gap that causes wobbly lines with standard flat rulers. Westcott reinforces one edge with stainless steel for clean knife cuts through mat board, illustration board, and heavy papers without damaging the ruler itself. Heavy-duty transparent plastic withstands studio wear while letting you see your work underneath, crucial for aligning grids with existing elements or measuring from specific reference points.

Black-painted calibrations remain visible whether you're working on white paper or dark illustration board. Sixteenth-inch increments handle precise measurements, while printed grid lines help maintain perpendicular cuts and verify right angles without separate tools. The 1½-inch width provides stability during cutting and prevents flexing that throws off measurements.

Available in 12½-inch and 18-inch lengths, these rulers handle everything from trimming small prints to cutting large mat boards. The combination of measuring accuracy, cutting capability, and see-through design makes them essential for printmakers, illustrators, and anyone who regularly cuts precise dimensions.