King Kong Revolver fingerboard as per the link below (only its been used, obviously). I've got a new board but it's been perfect for my training over the last 2 years.
Price: £10 + Postage (or delivered/collected if in the Preston/Chorley area)
Official Blurb: Constructed out of a polyurethane resin system, this fingerboard is three times stronger than conventional fingerboards and is also much lighter. It has a keyhole slot fixing system which means the board can be easily taken down when not in use without removing the fixing screws.
My Blurb: Small, but you can flip it round so there's actually 8 different sized holds including first knuckle crimp, some slopers, and small but adequate jugs if you want to use it for pull ups too.