| Site | Description |
|---|---|
| Cal Clifford | Details of over a hundred rules in his collection |
| John Current | Pictures of some of the rules in his collection |
| Chris Gillings | A list of pictures and rules in his collection including many special purpose rules |
| Kung | His personal collection of rules together with many links |
| Eric Marcotte | A resource centre together with a selection of his rules |
| Chris Sangwin | A resource centre |
| Todd Tolhurst | A selection of his rules |
| Ron Manley | Probably the largest non-commercial resource centre on the net |
| The Slide Rule Trading Company | Ted Hume and Paul Ross sell Spare Parts |
| Slide Rule Universe | A very impressive commercial site with a continually growing slide rule archive |
| Dave Crate's Quality Used Slide Rules | Wide range of rules for sale |
| Peter Holland | A German trader and collector dealing mainly in Aristo, Nestler and Faber-Castell |
| Abacus | An Abacus resource centre |
| David Thompson | New Faber Castell and Nestler's for sale |
| The Gemmary | A dealer in rules and antiques |
| The Slide Rule Trading Group | For buyers and sellers of rules |
| The International Slide Rule Group | A treasure house of information |
| The Oughtred Society | The International Society for all Slide Rule Collectors |
| Ing. Giovanni Pastore | History and collection of slide rules |
| Kent Walker | A personal collection |
| Peter Owen | A personal collection with some slide rule literature |
| University of Greifswald | A German site containing pictures of a range of linear,circular and cylindrical rules |
| Nederland Kring | A Dutch resource centre |
| Steve Burton | A Slide Rule Simulator |
| Keuffel and Esser | Keuffel and Esser Resource Centre |
| Circle of German slide rule collectors | Site of the German slide rule collectors |
| Philip Scholl's Slide Rule Page | An interesting site, not the least for its non-slide rule content. |
| Dick Rose | A site containing a large number of vintage instruments (including many slide rules) for sale. |
| Greg's Slide Rules | A personal collection of slide rules from an Australian collector and a resource centre. |
| Slide Rule Store | A range of rules, books, and manuals for sale |
| Dick Lyon's Otis King Site | An Otis King resource centre |
| The United Kingdom Slide Rule Circle | To promote interest in slide rules |
| Atsushi Tomozawa | A Japanese collector's site |
| Slide Rule Zone | A Chinese collector's site |
| "Mr Klingon" | For Klingons,trekkies and slide rule emulation |
| Robert Munafo's Slide Rules | An unusual page, well worth exploring |
| Giovanni Breda's Slide Rules | An Italian Collector's Slide Rules |
| Mike Konshak's Slide Rule Museum | A collection of his Slide Rules: "Calculators for Hairy-Eared Engineers" |
| The Slide Rule Store | Mike Deutsch sells slide rules, books, and manuals |
| Calculators at Gilai collectibles | A collection of slide rules and calculating equipments |
| William John's Slide Rules | A personal collection |
| David Davis Slide Rules | A Dietzgen and Relay/Ricoh Site |
| Markus' Sectors | A selection of Sector photographs |
| José Carlos' Slide Rules | A collection with significant Aristo content |
| Andrew Nitikin | A Resource Centre |
| Slide Rule Documentation | A selection of manuals for printing |
| Nathan Zeldes | An exhibition of slide rules and other historical computing artifacts |
| Rod Lovett's Slide Rules | A collection of slide rules showing the rule maker's art in the 20'th Century |
| "German Resource Centre" | Starting point for a wide range of pictures, literature, manuals, simulators etc. |
| Jorn's Online Museum | A German museum for abacii and slide rules |
| International Slide Rule Museum | Over 1000 specimens, downloadable scans and manuals |
| The University of Utah | What Can You Do With a Slide Rule? |
| Hemmi Rules | A small collection of pictures |
| Chris Osburn's Calculating Instruments | A personal collection and a question: Is a "calculating instrument" an "insidious device"? |
| David M Riches | A collection of mathematical instruments and slide rules |
| Jfzazza's Site | A Spanish collector's site |
| History of Technology Websites | Includes sections on the Halden Calculex, and John Dicas proof rule |
| Mark Armbrust's Collection | A collection of Pickett Model 5's |
| John Lahr's Slide Rule Collection | An inventory of his slide rules |
| linealis.org | A collection of French and European slide rules , particularly Graphoplex. |
| Tom Bullock's Slide Rules | A random collection of slide rules |
| Dave van Domelen | A collection of his slide rules |
| Sergei Frolov | A collection of Russian slide rules |
| Andreas Tabak | A German collector's slide rules |
| Hubert | A collection of Faber Castell slide rules |
| The Curta Calculator Site | Everything you need to know about the Curta |
| Kim's Collection | A Japanese collector's web site |
| Mad Slide Ruling | How to use a slide rule with lessons,videos and study guides. |
| Stefan Vorkoetter's Site | A collection of Slide Rules, Early Calculators, and Old Computers |
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