Most of these websites have links to more sites. A new hobby I recently decided to begin a new hobby, in addition to camera collecting and annoying my wife. Slide rules fell into disfavor about 1973 or so, due to the appearance of electronic calculators. The slide rule was invented by a guy named William Oughtred about 1630 give or take a few years, and became a powerful mathematical tool by the time of the Industrial Revolution. As my collection increases, I'll keep a listing on a separate page for perusal by those interested.
Words are inadequate.
Here is a link to pictures. No one has approved or disapproved this site. The opinions expressed are only opinions, and only those of the page author Cal Clifford. To my knowledge, there is nothing sinister herein.