content: Y'know, I'd never thought of it that way, but you're right. I built little quartz radios when I was a kid, but I'd never seen the process like this video depicts.  It's a very labor-intense series of steps - cutting, checking, and sooooo much grinding. It's also cool because it was filmed during the war effort, so 90% of the workers are women.  It's a great representation of how few men there were "back home".  Lots of them are wearing wedding rings, too; I wonder how many had husbands off fighting.