Swan Tool Group RED TAIL Offset Ruler

Designed to simplify layout tasks, the RED TAIL Offset Ruler is four essential tools in one: an offset guide, a 90° square, a 45° square, and a standard ruler. It features a unique design in which the offset does not wrap all the way around the ruler, meaning you can use it in its full capacity with the offset equipped. The built-in layout guides and lay-flat design make repeatable angle marking easy.

Swan Rulers feature "Tru-Mark" technology, which eliminates one of the most common sources of layout error: compensating for pencil thickness. Integrated pencil saddles and precision side notches allow you to place your pencil exactly where the measurement is needed, creating accurate, repeatable marks without offset calculations or guesswork. This means faster layout work, fewer mistakes, and improved accuracy.