Medical and Scientific
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- The Barometer Shop
- Buying, selling, repair, and restoration of antique mercurial and aneroid barometers, clocks and watches. Also restore other types of antiques. Includes examples of stock. Located in Leominster, England.
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- The Gemmary
- Sells a full range of scientific instruments, including globes and planetaria, mineralogical apparatus, microscopes and accessories, calculating apparatus, and physics demonstration apparatus.
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- Weights of an Apothecary
- A resource site for the antique weights formerly used by apothecaries, chemists, druggists and pharmacists. Most British weights of the 19th and 20th centuries illustrated and described. A forum for exchange of information and discussion
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- Wunderkammer Scientific Curiosities, Artefacts and Ephemera
- Both a retail store and scientific and natural history museum specialising in medical and scientific instruments, natural history specimens and models. The website posts a news page every month.
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- Discovering Slide Rules
- Relates a story about how one person found a giant cache of new-in-box slide rules.
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- Eric Marcotte, a Slide Rule Collector
- A personal compilation of information on slide rules with much information on his own collection.
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- Giovanni Breda's Slide Rule 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.
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- HP Museum - Early Calculators
- Some non-HP calculators that were introduced anywhere from centuries ago to the late 60's.
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- IM2001 - 7th International Meeting for Slide Rule and Calculating Machine Collectors
- Munich, Germany, September 14 - 16, 2001.
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- Slide Rule Museum
- Dedicated to engineers past and present, this collection of slide rules and manuals have in excess of 1000 different items scanned full size and categorized by company or continent. Also offers a glossary of slide rule terms and links.
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- Slide Rule Universe
- Includes on line archive of slide rule information, plus a catalog of available rules.
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- Slide Rules
- Dedicated to one man's collection of slide rules (and includes a photo gallery), plus a few links for those who want to find out more about them or where to buy one.
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- Slide Rules from German Manufacturers
- A collection of slide rules, with descriptions and pictures. Also, some links to other slide rule sites.