Yes my Pac-Man/Ms-Pac-Man/Galaga/Galaxian plans are not 100% accurate. They were quite difficult to measure because of all the curves. And yes, sorry about putting everything in decimal inches. I just wanted to make sure I was giving an accurate measurement of something and didn't want to put out crazy fractional inches.
Like the 3.35" measurement you are refering to in your pic, 3.35" = roughly 3 & 44/128". I figured people weren't actually going to bust out a tape measure to get down that exact, so I figured 3.35" would simplify things without sacrificing too much accuracy.
But back to the point, yes I appologize that my Ms Pac-Man plans are not as good as I initially thought they were when I drew them up. If I had access to another one someday I will hopefully be able to make the corrections.