Mark, your a local CQ guy now aren't you? Give us a yell sometime and we will go for a run in my Cruiser and I'll show you how lockers work.
You can drop into ARB Rocky, on Gladstone Road, and they have an air locker demo in there. It is sectionised version that allows you to see the internals and how they work. ARB are also marketing an air locker that with little mods will be able to be taken from vehicle to vehicle shortly as well.

Corry

PS. If you read this before Sunday, I will be in Rocky for the Rally X at the end of Key Street.