Finding a truly flat surface as a reference proved rather difficult. I did find my old T-Square, which proved flat, but I wasn't as sure about my old drawing board. I'll have to look at it again using the T-Square this time.
Flat. It's an obsession with woodworkers because real life comes in 3D, and in 3D, the reference point is a plane (literally).
Other than that, we're on our way to the Christmas season. But before then, we need to plan out a few pies for me to make.