OK. Whitebeam, Its not that funny really, years ago I ran a team of tilers, specialising in power vibration fixing, as foreman it was part of my job to set the screed levels,( semi-dry) . We were doing Aldi, Liddel and Netto stores. Up and down the country,did work in Europe, and had 4 trips to USA, we had a good reputation. One day on a Aldi store I was setting levels for screed, using dumpy + 2 lasers. The tiler who was holding the staff,a good fixer, can't mention names, had a strop I asked him to lower the dot, ( level) by 5mm , he lowered it to much, so I said up 2mm he raised it but on the dumpy it was still slightly low.So I said up half a mill. He threw the staff to the floor, and stormed off the job. When I asked his mate what was wrong? he said half a mill was nothing. This was a german spec, and 0 tolerance. The clerk of works was an old bricky, (a stickler) he kindly granted us a tolerance of +/- 1mm over a 3m box streight edge. So my idea was give them nothing to find fault with. We had a good run on those stores. About 10 yrs, good money,hard graft. A few years later a freind of mine who has been living and working as a tiler in Oz . Came home to the uk. I got him fixed up with a contracs manager who is a freind of mine. He started on a job where some of my old team were working. On the first dinner break, he happend to mention he used to work for Phil Hobson. To which the whole of the team, almost in unison replied, ( oh yeah Half a mill Phil). I am proud of that title. Sorry for going on. I told you it was'nt very funny.