12 isn't the key divisor it's 60 - basis of the Babylonian system (hence minutes and seconds, and 360 degrees in a circle) and historically the basis of the 'ol

12 isn't the key divisor it's 60 - basis of the Babylonian system (hence minutes and seconds, and 360 degrees in a circle) and historically the basis of the 'old money' in the UK (as those of us who can remember it call it): * pound - 240 old pence * 10 bob note - 120 old pence * crown - 60 old pence * half crown - 30 old pence * florin/2-bob bit - 24 old pence * shilling/bob - 12 pence * sixpence - 6 old pence * thrupenny bit - 3 old pence * penny, ha'penny (and before my time, farthing - one quarter of an old pence). Missing intervals are the groat (4 old pence) in the old Scotch money.