Well slide rules once ruled the calculating arena ... up until about 1979, and then it all disappeared.  The slide rule in effect helped design the very beast that would take its place - the electronic calculator!  Now almost everyone owns a calculator, but not everyone owned a slide rule.

This site is for those people and users who still work with the slide rule or just want to know more about them.  So delve in and see what you think.  You never know, you might just become one of those people so amazed by these devices that you'll want one and then never let it go!