Curious about if there's any tool for it
I just cut a hole in a roof to run duct to a factory after we put in a double screw compressor set up, but when I was setting up the dimensions I used the A²B² and c² is your diagonal, and then used a level two make sure it was even on all sides and to the blocks the fan would be sitting on, but I'm wondering if there's anything to make it level with the building, i got a lazer level but sadly that wouldn't do anything unless it was night , it worked out fine, but I'd like it to be more perfect next time I'd do it