Now I really feel old. I used one not only in high school, but also when I was an electrical draftsman for GE before my military days. I used to draw transformers, lightning arrestors, and reclosers and used a slide rule for a ton of calculations.

I think I'd be lucky how to remember the process for multiplication on one of them these days.

I know I have about 4 or 5 around somewhere, one of them being ivory. They are in a box somewhere in the garage. Finding them is another story. Got to be over a thousand boxes inside other boxes in other boxes after our move.

If I run across them, I'll give you a jingle...