With Derlin rollers, Perfect for engineering and construction applications.

Every Mayline parallel ruling straightedge begins with a durable, black phenolic laminate base where we inset a transparent blade for see-through registration and fine line quality.

For those who work with a variety of surfaces, we designed a straightedge with retractile, ball-bearing rollers of metal or Delrin built right into its base. They literally float over any surface whether it’s paper or film. The rollers come in chrome-plated brass or plastic.

We recommend the plastic rollers for use with drafting films.

Above-board mounting hardware included.