Check this AWESOME, features and tricks of a speed square. These are my hand picked favorites! Sit back and enjoy... Speed square used in the video amzn.to/3nVUznE
It can be used to check to make sure a corner is square by seeing if it wobbles in between the two pieces, it can also be used to draw a circle by pivoting it on a nail, it can also be used to make sure a stack of lumber is perfectly lined up on one side before cutting through multiple sheets at once. It can also be used to push two pieces together at a perfect 90 while nailing.
I drilled out a little hole so that I can mark center lines for screwing 2x4s together. I drilled a hole and counter sunk it to match 3/4" when using a pencil. This allows me to mark 2 screw location which are centered correctly.
That's good idea to have dedicated holes for that. I just cross cut 2x4 for 1/4" and drilled holes in this piece at the same locations as you. After that it works as template for me. I used that template when I assembling my table saw workbench. For uniform screw placing and more professional look. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-9gSQYKDIyvU.html
Putting multiple fasteners on the same line down a piece of wood increases the chance of the wood splitting. If you want to skip the pilot hole step such as when using a framing nailer or a ramset, it's recommended to place the holes toward either side to avoid them being on the same grain.
Pro tip: Ive seen this problem so many times i cant count them all. A speed square that has had some use Over time after being dropped or bumped. The edge with the lip gets flattened out on the ends.. Take a file and file the bumps off the end. Also seen trim carpenters with glue stuck to the lip ..scrape it off
Not a fan of the milwaukee speed square it's to light (always falling out of my tool belt) and material is weak. I use a Swanson from the 80s much better