On Jul 14, 9:23 am, Harry K wrote:

The simple, fast, and very cheap, method is to use a friggin bevel
guage. It will let you lay out the exact angle in a few seconds and
there is no figuring or measuring (other than for length) involved.
You don't even need to know what the rise/run, or angle, is.

I am surprised at all the people who think you need to do all that
leveling, measureing, figuring. A bevel gauge should be one of the
added to a DIY kit at a very early stage.

Bevel gauges (aka sliding T-bevels) are useful, no doubt, but they're
not commonly the tool of choice for roof framing. A framing square
with stair gauges is the traditional layout tool.
http://www.tpub.com/content/construc...s/14044_65.htm
And speed squares are a more recent development.
http://www.amazon.com/Swanson-Tool-S.../dp/B000056C0D
Both have advantages over a bevel gauge.

R