Hello Mr Covington
I am intrigued and amused by your definitioin of what constitutes acseptable tolerances. It is something I have been thinking about lately. You seem to know what your talking about, so please tell me just exactly why it is essential or even necesary to create a building that is so "squarely square" as it were?? confused
Cheers Jonathan
PS do you think theres a good chance your 30,000 units will still be standing in 600 years time? wink laugh