Brian also has a second model which is not a clamp, but balances on the edge of the table - that doesn't sound very secure, but I can assure everyone that it is, as I have been using it for nearly two years, having previously used his clamp. I find the "balance" model ideal for those tables which have a bevelled edge, which are difficult to attach the clamp to. It is also quicker to set up, as it is all in one piece (the clamp disassembles for flat packing). The price is less than the clamp model, also, being , I think, around seven or eight pounds sterling (but check on the website).

Joan