The Little “Blue Book” for Roof & Stairway Layout includes detailed instructions on how to use Swanson Speed Squares using the Swanson “One Number Method” for roof layout. The booklet provides vital instructions, reference diagrams, & tables for the construction of roofs & stairs. A very handy reference booklet.
Product Pages of Information
Model # Swanson's "Little Blue Book of Instructions for Roof & Stairway Layout" 62 3 - 1/2" x 5 - 1/2"P0110