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MAYLINE Parallel Straightedges, Mayline Parallel Rules, Mayline EZ Grip, Mayline Parallel Straightedges Derlin or Metal Rollers by Mayline

Mayline parallel straightedges or parallel ruling 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, Mayline designed a straightedge with retractile, ball-bearing rollers of metal or Delrin built right into its base. The Mayline parallel straightedges literally float over any surface whether it's paper or film. These parallel bars work well with drafting tables or drafting boards. The rollers come in chrome-plated brass or plastic. We recommend the plastic rollers for use with drafting films. Above-board mounting hardware included.