"One-Number Method"™
The Swanson layout system every Speed® Square user learns from this book. One inch reading, every pitched-roof angle solved.
Bound Pocket Reference
Sized to ride in the same apron pocket as a 7 in. Speed® Square. Roof + stairway layout instructions, formulas, and worked examples, all in one bound reference.
Rafter Tables + Construction Diagrams
Rafter-length tables for every common pitch and run. Hand-drawn construction diagrams show ridge, hip, valley, and jack-rafter cuts in context.
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SKU P0110
Available at trusted retailers nationwide
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The Little “Blue Book” for Roof and Stairway Layout includes detailed instructions on how to use the Speed® Square and Big 12® Speed® Square using the “One-Number Method”™ for roof layout.
P0110
Pick up locally or order online from Amazon, Home Depot, Lowe’s, Walmart, Ace, Menards, or Acme Tools.
Family-owned
Same factory since 1925
Trusted retailers
Available nationwide
Pro-trusted
32,000+ verified reviews
In stock at retailers
Why pros reach for it
01
The Swanson layout system every Speed® Square user learns from this book. One inch reading, every pitched-roof angle solved.
02
Sized to ride in the same apron pocket as a 7 in. Speed® Square. Roof + stairway layout instructions, formulas, and worked examples, all in one bound reference.
03
Rafter-length tables for every common pitch and run. Hand-drawn construction diagrams show ridge, hip, valley, and jack-rafter cuts in context.
A closer look
The book is the manual for the Swanson layout system every Speed® Square user learns. One inch reading, every pitched-roof angle solved.
Sized to ride in the same apron pocket as a 7 in. Speed® Square. Tables, formulas, and worked examples, all bound in one reference.
Rafter-length tables for every common pitch and run. Hand-drawn diagrams show ridge, hip, valley, and jack-rafter cuts in context.
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