The Museum of New Zealand is in the process of specifying compacting shelving designs for its new building. We have got to a division of opinion on the various merits of a crank handle vs a wheel for driving the shelving units. If anyone has had experience with both and can give me technical information on the comparative gearing possibilities for either system or put me in touch with someone who can by Thursday morning I would be very grateful. Kate Roberts Museum of New Zealand [log in to unmask]