Here's a bit of info - click the individual links:
Anyway, I managed to get some photos of the drawings. It was good to see how the artist had gone about them. Drawing circles initially, I can agree totally with that method, it works every time.
Sorry these photos aren't brilliantly clear. The lighting in the gallery was bright and these exhibits were also in glass cabinets, so the reflections were very difficult to deal with. As you will see, they were mostly drawn out on tracing paper so they could be repeated.
The cut-outs were done in order to keep the whole film to scale.