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 MethodSM for roof layout.Features60 page manual"One Number Method"SM for roof layoutIncludes rafter
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 MethodSM for roof layout.
Features
60 page manual
“One Number Method”SM for roof layout
Includes rafter tables & construction diagrams
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