Watch crown printed circuit board

I had the main circuit board splayed out in front of me on his workbench, soldering iron in hand, and was consulting the vectorised PCB layout from the manual on a large LCD monitor to one side. ... There is a large block of perspex bolted to one of the buildings, with a crown eroded out of it. At the time, it was the largest sculpture made from perspex - and was made from the original monolith. Kubrick's first idea was to have that transparent, but he found out early on ...