Thanks PieEater and Karlo.
Karlo, exactly what I wanted, but where is that measurement from/to. I cannot believe that my longest dogbones are 10mm shorter than standard.
My measurements above are from edge of hole to edge of hole (internal). I don't have the dogbones with me, but if the measurement is centre of hole to centre of hole, I think 140mm is about the length of my longest set (so standard). It then appears that I have a 1" and a 2" ride height jack up kit.