Tiled a bathroom recently, 25 cm x 33 cm ceramic tiles, supplied by customer who got them from Topps Tiles.
Started using box 3 & found the horizontal grout line going out of kilter. Row beneath was perfect.
Measured the tile & it was over size by a good 2mm.
Boxes 4, 5, 6 & 7 were fine.
Not come across this before. Very slight variations yes, but not that much.
What would be the tolerance on a ceramic tile +/-?