Instrument Cluster

hey guys,
Bit of a random question here but I need to know the rough size of the diameter of the dials in the instrument cluster as I need to get a hole saw from work but forgot to measure them this morning.
Anyone able to help?
In mm if possible but inch Is fine.
Thanks
Aidan

the big ones are 80mm - speedo rev counter and fuel/temp

the ancillary ones if fitted are normally 52mm - volts amps etc

At least i think they are, but always better to measure.