• Accurate reading - This folding parallel rule features transparent blades for easy reading with non-skid pads.
• Easy drafting - Sturdy aluminum links provide the right amount of tension for drawing a line parallel to another line or reference point.
• Premium quality - This folding parallel rule are made of durable materials including non magnetic and corrosion-resistant metal parts for long-lasting use.
• Ruler length - Each parallel drafting ruler opens to 3-inch spacing between blades and has 12-inch length.
• A Professional's Choice - ALVIN has been the professional's choice for drafting tools and drawing supplies for over half a century. since 1950, we have brought quality and value to our customers.

Proudly Made in Taiwan