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Mayline Parallel Ruling Straightedge w/ARMOREDGE 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, Armoredge has designed a straightedge with retractile, ball-bearing rollers of metal built right into its base for you. They literally float over any surface whether it's paper or film. We recommend the plastic rollers for use with drafting films. Above-board mounting hardware included.
Armoredge Parallel Se
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