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Speed Square: Uses, Tricks, and Mods

I have used Speed Squares throughout my many years working in the trades. Knowing how to use the Speed Square will greatly improve your productivity. There are also some tricks you can use to increase their functionality. I'll show you a couple of mods I use with Speed Squares as a millwright as well. 00:00 Introduction 01:11 Quick reference angles and protractor 03:40 Common rafter layout 04:33 Common rafter scale and bird's mouth 07:05 Calculate roof pitches in degrees 07:55 Hip and valley rafter scale 08:46 Complimentary angles 09:31 Base plate layout and measurement trick 10:19 Align material and speed square length 10:41 Speed Square Pro 11:19 Compass function 11:56 Center line for round stock 12:15 Measure obtuse angles 13:40 Find the center of a circle 14:18 Squaring material and saws 14:45 Leveling trick 15:02 Find existing roof pitches 15:23 Trim guide 16:03 Welder's modification #1 17:07 Welder's modification #2 17:59 Smart phone kickstand 18:10 Saw guide 18:30 Miscellaneous uses 19:05 Outro