Well that wraps the Top-10 River Nile Must-Sees. I could have included another 100 sites from the Nile Source, through the Nile Valley, to the Nile Delta, but I want to leave something for you to discover for yourself.
The framing square is one of the most frequently used Builder tools. The problems it can solve are so many and varied that books have been written on the square alone. Only a few of the more common uses of the square can be presented here.
Use in roof framing[edit] There is a table of numbers on the face side of the steel square; this is called the rafter table. The rafter table allows the carpenter to make quick calculations based on the Pythagorean theorem. The table is organized by columns that correspond to various slopes of the roof.