Alvin Adjustable Curves

The Alvin Acu-Arc Adjustable Curves are made of incredibly flexible, shape-holding butyrate plastic that can be finger shaped to any cruve for extremely accurate drawings.

• One edge is flat to surface for pencils, and the other side has a bead for ruling pen
• Manufactured by hand, these curves have been used by architects, engineers, chiropractors, designers, draftsmen, artists, woodworkers, metal workers, surveyors, carpet installers, and law enforcement for 45 years.