Perfect for engineering and construction applications. Every Mayline parallel ruling straightedge begins with a durable, black phenolic laminate base where a transparent blade is inset for see-through registration and fine line quality. For those who work with a variety of surfaces, straightedge is designed 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. Plastic rollers are recommended for use with drafting films. Above-board mounting hardware included.
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mpn: 3902-80X, ean: 0089612019969,
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mpn: 1213I, ean: 0089612020026,
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