Alvin and Mayline Parallel Rules.
MAYLINE Mobile Parallel Ruling Straightedges Perfect for engineering and construction applications.
The industry standard.



ALVIN mobile straightedge affords frictionless operation through the floating action of the nylon rollers mounted on the blade. The rollers retract at a touch, securing the blade for accurate drawing.

Parallel Rules

Sub-Categories
  • Mayline Parallel Rule
    MAYLINE Mobile Parallel Ruling Straightedges are the industry standard for engineering and construction applications. Made in the USA.
  • Alvin Parallel Rule
    Alvin mobile straightedge affords frictionless operation through the floating action of the nylon rollers mounted on the blade. The rollers retract at a touch, securing the blade for accurate drawing.

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