Start button size

Does anybody know the size of the push start bbutton or could you
mesure it please, thank you in advance I would mesure my own but its
been in the garage waiting for a new manifold for the last 9 days :angry:
 
It's hard to explain why and long winded but here you go, basically it's quite hard to get a standard console 2nd hand and I don't want to buy a new one as I'm selling the car, I bought a Carbon console but it didn't have the mount for
the start button so I cut it out of the standard console and mounted it to the carbon one but this has left a crap join
And no doubt a dealer will spot this, so I want to make a carbon vinyl ring to cover the join to tidy it up and I want to
make it ASAP so when I get my car back I can put the vynil on around the button and it will look tidy and I can start looking at some cars, I have put a wanted thread out for a silver console I'm just trying to deal with the problem In the quickest way I can