I get a lot of strange looks on these site jobs because on my belt everyday sits my eye level in its pouch. I would say I use it everyday. While these young little pukes spend what seems like eternity setting up a simple laser, I've pulled my stick rule out, and shot my grades. Up in MN with highway heavy work...seems like if you didn't have an eye level, you stuck out like a sore thumb!! To us it was extremely unusual. Now the plumbers I work with,...they look at me when I use it like I've just invented the wheel. Funny how they think old technology is really cool because they simply have never seen it before. All of them are so used to setting up the laser. There are a few downfalls to eye levels. First, you have to have one that has a telescoping eye piece otherwise shooting grades past 10-15ft becomes tough. Second, you can't shoot grades at a great distance. Third you have to check your eye level constantly to make sure it's calibrated correctly otherwise you can really mess up!!!! I love my eye level, it makes spot checking really simple (if your math is correct!)
