Peter Wieck wrote:

snip
I spent a few shifts in the tool-room in my time - and between
fetching buckets of air and carbon-stretchers...

I wonder how widespread is the usage of such mythical terms; I had
a friend who labeled boxes of unknown (mostly hardware) components
"muffler bearings", and another who routinely castigated incompetent
parts buyers saying of them "he doesn't know modems from manhole
covers".

How about some more of these?

Michael