brake disc size

Technical Area Wheels, Tyres & Brakes
2

 Is the a way of telling what size brake discs you have fitted, with out removing them and using a Vernia calipers

 

I am looking for a new set disc and there seams to be a lot of variations out there

 

My car is a mk1 1.8 V-Spec 1993 (NA8C)

3

 THESE

4

Is this any help?

5

 Yes thanks[:D]