This is an auction for a wobbly person to look at. I am looking for an old french machinists stool and i came across this and chuckled quite a bit. http://www.ebay.co.uk/itm/VINTAGE-ADJUSTABLE-HEIGHT-STOOL-CHAIR-THINGY-/270964315622?pt=UK_Antiques_AntiqueFurniture_SM&hash=item3f16bb55e6#ht_500wt_1287
its there now sorry bout that. Stupid 'ebay' button on the post a thread page seems to be dog Marmitee. PSG