Classifies and lists slide rule and scales. Grouped by type, size, country of origin and manufacturer. Articles, a discussion forum and a section on buying and selling.

Assorted slide rules for sale as well as some historical information.

Relates a story about how one person found a giant cache of new-in-box slide rules.

A personal compilation of information on slide rules with much information on his own collection.

Giovanni Breda shows his collection. A sheet for each rule is provided including high resolution images. Links to other collector's site are also provided.

Large categorised collection with photos and notes.

Some non-HP calculators that were introduced anywhere from centuries ago to the late 60's.

Munich, Germany, September 14 - 16, 2001.

Custom slide rule for sale. Online calculations which cover the same functions available on the site. Manual included with the slide rule.

Presents Napier's Bones and the Genaille Lucas rulers in ready to print forms: Postcript and PDF.