Brief story: Many moons ago I was checking my tyre pressures, buggering around with a airline that wouldn't fit, and up rolled a fellow biker who gave me a smug smile and promptly produced this tool...
"Want to try this?" he said?
"<mutter mutter mutter> OK then"
**** me it's amazing!
http://www.bustersclassic.co.uk/products.asp?id=121
Placing my order now! Well worth imho.