He never worked for the Roses, he was roadie with The Inspiral Carpets, but dont think he actually did much "roadie-ing" ;D

Anybody that's been in a band most likely knows how to. When you're first starting out you and your band have to set everything up, tune everything, bring in any extra equipment and everything else. But once you become famous you get techies/roadies that come on the road with you and they do all of that for you and I doubt it that they do that themselves anyways, they have all this expensive equipment like chromatic tuners (not tthe little ones you see in shops but these big, long ones made by Korg and stuff) and alike so they'd just use one of those.