As my plan to make a set of battle maps is still existing, I'm now looking for the best format to do them (after thinking about the settings). What would be the ideal size for a .pdf collection? Letter format? Additionally, which grid size would be best? 0,5 inch?

I usually see most projects for which I am commissioned from the cartographic/artistic side, so I'm not completely sure about the gaming side.

I'm glad about any comments.