I learned how to use a slide-rule in 11th grade. Got to start using calculators in my senior year. I still have one left - it was my Dad's from when he was studying engineering when he was in the Marine Corps in WWII. It looks to be bamboo with white plastic venier and glass cursor. The cursor has a crack in it unfortunately. Made by J. Sun if I recall correctly and had some Japanese on it. I also have the matching triangular engineers ruler. I'd never part with them though; I'm too sentimental and nostalgic, just like I still shave with my grandfather's str8.
I think slide-rules are cool, just like I like straight razors and 18th century woodworking tools and fountain pens and black powder rifles and ...