JKoch thats almost impossible to measure, the only way your going to be able to do this is level up a 26' dia spot. then put the pool together then start filling it then you can work on the legs. you can put a 1' of water in it and still be able to lift a leg up you had a great ideal with putting the top frame together then marking the legs but that is as close as you can get it. I could measure mine but that does not mean your's will be the same. and plus these legs move a little the only thing you can do is make sure they are level side to side. they are going to lean in or out, there's nothing you can do about that,

My square's on the inside are not level, I have a full square on one side where it meets the Tan part and on the other side I only have a half square. so I would use a tape measure to check unless your sure. the water line to the top rail mesurment is the only true way to tell. like satguy said the water level will not lie,

Everything I have heard is you get about 2-3 years life out of these pools. so don't worry alot about the tiny details, get it as level as you can, fill her up and enjoy.

I knew when I got this pool is was a temp thing, me and the wife were not sure if we wanted the up-keep of a swimming pool, or how much we would use it, so we didn't want to dump alot of money in a above ground pool untill we were sure, but we love it and with the help of these guys and Girls (didn't want to leave out WaterMom) on here, pool up-keep is as easy as it gets, So thanks to all next year Me and the Wife will install a Hardside above ground pool.

I also did as Satguy did and put a sand filter on mine

Satguy are you sure about the 54" mine is a 52" I didn't think they were making a 54