Originally Posted by Campag4life

My Look was 57 cm center to center...which is the equivalent of 59cm center to top. Also, you may want to look again at your Look frame size...I have never seen a 56cm Look. Looks are measured center to center and in my experience sized in odd numbers...55, 57, 59 etc...see below 585 chart.
See Look 585 geometry chart...note...frames are odd and not even sized...center to center...no 56.