Retro chic! Dude!

MIT Museum: Exhibitions - The Most Important Instrument:  Slide Rules and the Making of the Modern World

I'm going to dig both mine out of the back closet forthwith. (Yes, I have a full-sized aluminum slipstick and a wooden, pocket-sized model, the kind you can glamorously wear with a plastic pocket protector and a half-dozen pencils. Really.)