A travelling exhibition of models of Leonardo's machines is in town at the moment over at Fox Studios (now re-named Entertainment Quarter). 60 of his inventions and devices are on display, many of which can be operated with handles and so on. It is possible to go inside his room of mirrors to see your own back and so on. The catalog is a useful addition to my library for my Leonardo web site still in progress. The whole exhibition is very timely for my writing. Here are some highlights.