Haha I didn't mean the width It would be really cool if you could measure. So I meant the height of a step and the depth. So how many cm are available as a tread.
Oh, I hope I remember.
Nice staircase, what are you putting as a railing?
Really? - such a tiny little joint of half a centimeter between tiles of, say, 60x60, tone on tone or moderately contrasting, that almost looks away by itself (?)