[Nanozeugma]

In the process of refurbishing a Murphy A104, some rust in places...

Currently working on the SW bandspread projector system.

Backplane very rusty.

Photographs show as found and after some clean up.

Q. Anyone know why the steel has a pattern of indents on some faces and not on others?
I'm guessing it's a result of how it was held during manufacture from sheet steel, a process of several stages, I would imagine.

As you can see, the mirror will need replacing. Not sure with what yet, obtained a sample piece of some mirror backed acrylic which could be sized easily with a razor saw, but it's at least twice as thick as the glass...