HELP speedo & rev counter diameter size

hi all
i want put digital spedo and rev counter in my Z 1000 shells it is the ones with chrome outer casings a A1 model can any one give me the sizes of the spedo and rev counter as i do not have these yet so i can see if they will fit the ones i have been looking at.

many thanks

hey Andy,it is late now,but i will make a note to myself. Tomorrow I,ll get to garage and give you a measure. I have a KZ900,guess they are the same.