The thing that made "balancing the tone arm on a turntable," the cd player, is quickly becoming more obsolete then tone arm balancing. At my work we have a cd player that hasn't been plugged in for at least a year, but the turntable is still used at least once a week. I take my record player in to get a new needle, cleaned and re-balbanced about every 2 years. If I touch a cd it isn't more then once, just put it on a hard drive and throw the hideous thing away.
I actually had to do this a few years ago. It is not exactly obsolete.
I used to love to do this: http://obsoleteskills.com/skills/buyarolloffilm -even better was developing it. Working on an image, dodging and burning -for real I'm only through the "B"'s -Cool post.
'course, a lot of those always were. "Align the heads on a floppy disk" is something near nobody ever did ever.
Just a sec... Yeah, I just checked the 1E DMG; it's "To Hit AC 0". It's pretty obvious that this person didn't play much. Usually this value was determined by Dungeon Masters, in advance, through “complex” calculations. That's just not the case. The attack matrices take care of it all.