[adrianhoward]

My dad was a draftsman, and worked on everything from conveyer belt systems to satellite test rigs. This was in the years before CAD and he often brought A1 and A0 paper home from work for us kids to scribble on.

One time I can remember getting this sheet with this wonderful crossed-grid with rings pattern. I remember staring at it for a good ten minutes before turning it over and trying to draw spider-man ;-)

It was several year before I realised that I was looking at a drawing of core store.

One of my life regrets was that I didn't know to save it. I'd love to have it on the wall framed now ;)