HI, just fitted my kitchen and used a piece of the plinth as a guide for the base units, dont think there is a specific hieght for the wall units, just remember to allow the deco rail at the bottom of the unit, my wall units are about 550mm from the top of the base units, i have a 40mm worktop, i have a space of about 450mm between worktop and deco rail. hope this helps.
Hi Base units approx 900 high, 550 from worktop to wall units. if there are any tall units, the top of these provides the height of the wall units. You cannot be precise as units have to be leveled on a floor that may be uneven.