Mayline Mobile Parallel Ruling Straightedge with Metal Rollers Perfect for engineering and construction applications! Every Mayline parallel ruling straightedge begins with a durable, black phenolic laminate base where Mayline insets 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 built right into its base. They literally float over any surface, whether it's paper or film! Above-board mounting hardware included.
The Original Straightedge! Don't bother with a copy - Mayline Invented The Straightedge!
Mayline Straightedge W/Metal Rlr