Bawylie
A very OK person
It's not "Theatre of the Mind" when the measurements are laid out in inches. Or fictional feet. Really anything precise like that. 1 inch = 10 ft. 1 square = 5 ft. All of that is concrete - it requires a tableau - which may be in your mind. But that's no different, functionally, than maps w/minis.
Where precise distances, measurements, & positioning are required, you are playing on a grid.
Where precise distances, measurements, & positioning are required, you are playing on a grid.