Metal MPLS Template

So I decided to make a quick template for the metal MPLS(Limited energy cut in box), Cheater Box, whatever you wanna call them.
10.1x10x29 Square level you get from really cheap tv mounts.
9.3x39.5 Round Spirit Bubble from a Johnson Level.
8x22 Round Spirit Bubble was ordered from Banggood I think. It's been awhile.
This is single gang template. I'm not gonna lie i haven't tried it, or even checked the measurements because Idon't have any on hand. My Level was notched so I went off of those notches hoping they were right its been a minute. Double check that it's placed fairly level and glue in place!