I think them tools they measure the thickness are about £400, nice toy! Hopefully mine will pass their criteria and the work get done. Ideally i would over the moon with the bonnet being fully resprayed. The rest of the bodywork is immaculate, thanks to my machine polisher and a very patient girlfriend keeping me company. Im from preston, i think im the only person in Preston to have an 8L S3, their rare as a rocking horse s**t. Which obviously is a good thing!