Hey, I'm sharing one of my favorite tools. A Veritas Saddle Square. Actually I have two in different sizes. This is the large size for marking 2x4 and 4x4 (shown on 4x4 here). One of those tools that makes woodworking a pleasure.



They're great for continuing lines from side to side. And even side to opposite side.
Works really well when the board has a rounded edge or some wane where the edge is not really sharp and square but the two adjacent faces are square to each other. And the size is perfect and easy to handle and position. Its tons easier to do this job with the saddle square than with a 12" combi square.

https://www.leevalley.com/en-us/shop...saddle-squares

They've gone up in price, I've had mine for years but they are still a bargain compared to Woodpecker's tools. And Veritas tools have always been top notch quality to me. I find I use the bigger one more if you can only get one. Its small enough to easily use on 1x4 and 1x2 items.



Helped me lay out these cuts