Parallel Glider Rulers & Squares We believe the exacting quality

We believe the exacting quality and accuracy of our product has kept the Swanson name on the minds of our customers for more than 90-years

To keep the stone fresh and efficient

Blade material: Double-hardened carbon steel

There is also deep crosshatching

Handle Size: wood

Parallel Glider Rulers & Squares We believe the exacting qualityA PROFESSIONAL'S CHOICE Alvin has been the professional's choice for drafting tools and drawing supplies for over half a century. We are known for our wide selection of high quality tools at a fair price. EASY TO USE INSTRUMENT Combines the functions of a parallel straightedge, triangle, protractor, T square, and compass in one. One of the most useful and convenient aids for drafting, drawing, and nautical applications. SMOOTH GLIDING ACTION Enables