Understanding True, Plumb, Square and 2 other handy principals.

[@generessler6282]

I think you meant _principles_ rather than principals, but maybe it's different down under.

[@midlifecarpentry]

Indeed I did sir. Noted and Thank you.

[@N1rOx]

I call it Straight plumb square and plane. But it's the same everywhere! A Carpenter who has learned in China can go to another country and build there! The foundational principles are all the same!