Alan Walker
- Photographs of a collection of stick barometers and wheel barometers, with details of their dates and history. Restoration and sales offered.
- http://www.alanwalker-barometers.com

Museum of Questionable Medical Devices
- Offers displays of quackery, fraud, deceit and deception; an online collection of medical chicanery.
- http://www.museumofquackery.com/

Sheffield Museum of Anaesthesia
- Extensive selection of old anaesthetic equipment which offers an insight into the evolution of the specialty of anaesthesia over the past century.
- http://www.sthgas.com/museum/

Here Today, Here Tomorrow
- Online exhibit of varieties of medical ephemera.
- http://www.nlm.nih.gov/exhibition/ephemera/

Edison's Universal Stock Ticker
- A collection of antique tickertape machines which details the histors of Wall Street and the stock market.
- http://www.edisonticker.com

Apothecary Collectables
- Sells antique bottles, old chemist and pharmacy supplies, labels, prints and oddities from the bygone apothecary.
- http://www.apothecarycollectables.com

Cabinboy Instruments
- A site for buying, selling and repair of scientific instruments including barometers, barographs, ship clocks, compasses and meteorology books.
- http://www.cabinboyinstruments.com

Medical and Scientific Instruments
- A collection of medical instruments used in anesthesia and gynecology with a section on medical electricity. (In Italian, French and English)
- http://www.amber-ambre-inclusions.info/ing-medical__instruments.htm

Allan Wissner
- Buyer of antique microscopes presents articles, photographs, and list of patents.
- http://www.antique-microscopes.com/

Medical and Scientific Antique Collection
- Curious Science is a specialist dealer in medical, scientific and curiosity antiques from around the world. The shop is located in Fulham, London, UK.
- http://www.curiousscience.com

Bausch & Lomb Professional Model Microscopes
- Discussion and photography following the evolution of the Bausch & Lomb Optical Co.'s Professional Model Microscopes between 1876-1896. Of interest to collectors of antique microscopes and historians.
- http://users.bestweb.net/~wissner/professional/professional.html

Duncan Robert Antiques
- A Canadian specialist in antique scientific and medical instruments since 1984.
- http://www.duncanrobert.com

Phisick
- Presents a collection of medical antiques grouped by specialty, with photographs and descriptions of each item.
- http://www.phisick.com

Cathode Ray Tube Site
- A collection of cathode ray tubes (CRTs), x-ray tubes, camera tubes and other electronic glassware, with information about the history of old physics equipment and links to other sites with shared interests.
- http://members.chello.nl/h.dijkstra19/

Antique Spectacles and Other Visual Aids
- A comprehensive site devoted to antique spectacles and visual aids. Historical and educational links augmented with good pictures.
- http://www.antiquespectacles.com

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
- http://www.apothecariesweights.com/

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.
- http://wunderkammer.com.au

Antiques of Science and Technology
- Historical instruments of science and technology, for sale, repaired, and bought, for collectors, museums, awards for scientific achievements, replications for historical research and scienctific movie props.
- http://scitechantiques.com

Kunstkammer Georg Laue
- A Kunstkammer collection of 'curiosities and wonders', where Renaissance and Baroque art meet science. Objects made from a variety of exotic materials are displayed with accompanying educational text.
- http://www.kunstkammer.com

Health Physics Historical Instrumentation Collection
- Photos and descriptions of radiation-related items from the past, including dosimeters, electroscopes, ionization chambers, radioactive sources, safety posters, quack cures, geiger-mueller counters, fluoroscopes used to fit shoes, and x-ray apparatus.
- http://www.orau.org/ptp/museumdirectory.htm

The Gemmary
- Sells a full range of scientific instruments, including globes and planetaria, mineralogical apparatus, microscopes and accessories, calculating apparatus, and physics demonstration apparatus.
- http://www.gemmary.com/

American & Civil War Surgical Amputation Sets
- Information and photos of American made surgical and amputation sets made between 1800 and 1870. Detailed data on Civil War surgical sets as well as advice on how to collect and price medical antiques.
- http://www.braceface.com/medical/Pages/Antiquesurgicalsets.htm

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.
- http://www.thebarometershop.co.uk/

Historical Microscopes.
- Brass microscopes, optical and other scientific instruments, books about microscopes and microscopy.
- http://www.kambeck.com/

Medical Antiques Collector
- Dedicated to the history of medicine, dentistry, pharmacy, and quackery as found in the antiques and art of the past. Introduction to the hobby and tips for beginners.
- http://www.collectmedicalantiques.com/

Quicksilver Barometers
- English seller and repairer consistent with the original specifications of the device.
- http://www.quicksilver-barometers.co.uk/

Pre-1870 American Surgical Antiques
- Dr. Michael Echols presents extensive information on Civil War surgical sets with numerous photos of a large collection of American made surgical sets. Identification, pricing, and set evaluations provided at no charge.
- http://www.braceface.com/medical

International Society of Antique Scale Collectors (ISASC)
- Galleries of scales, weights, and measures. Scale tutorial, membership information and application.
- http://www.isasc.org/

Eye Antiques and Collectibles
- Eye antiques display items from the ophthalmic past including glasses spectacles, ophthalmoscopes, microscopes, and eye exam items.
- http://www.eyeantiques.com/

Alex Peck Antique Scientifica
- Sells antique medical, surgical, dental, and Civil War medical related artifacts. Online illustrated catalogue and archive of sold items.
- http://antiquescientifica.com/

MedicalAntiques
- Educational site for collectors and those interested in antique medical, surgical, and bloodletting instruments.
- http://www.medicalantiques.com/

Scientific Instrument Collection
- Collector selling collection of antique and nearly antique scientific instruments.
- http://website.lineone.net/~bsneesby/

M&R Gordon
- Dealers in antique medical and dental instruments and related material for collectors.
- http://www.mindspring.com/~gordon9/med.html

Antique Spectacles
- Provides information on antique spectacles, eyeglasses, monocles, pince nez and lorgnettes. Also includes a virtual spectacles museum.
- http://www.antiquespectacles.co.uk/

Simon Weber-Unger
- Austrian dealer of antique medical and scientific instruments including globes.
- http://www.wisskab.com/

Ars Machina
- Buys and sells antique brass microscopes and telescopes. Credit Cards accepted.
- http://arsmachina.com

Scales and Weights
- A collection of all types of historical scales and weights from different periods of the past 3000 years.
- http://www.scales-and-weights.com/

EBL Historical Collection
- Images of medicine-makers advertising cards.
- http://www.mc.vanderbilt.edu/biolib/hc/nostrums/cards.html

Museum of Microscopy
- Site contains a museum of classical microscopes ranging from the first European microscopes built in the sixteenth century to modern microscopes from around the world.
- http://microscopy.fsu.edu/primer/museum/

Medical Antiques Online
- Collection includes images and descriptions of stethoscopes and other medical items.
- http://www.antiquemed.com/

History of Science, Technology and Medicine
- WWW Virtual Library for the history of science, technology and medicine. Source for collectors research information.
- http://www.asap.unimelb.edu.au/hstm/hstm_ove.htm

Osborne's Antiques
- Manufacturers and suppliers of barometer parts mercury tubes and thermometers for the repair and restoration of antique and modern barometers.
- http://barometerparts.co.uk/

Scientific Medical & Mechanical Antiques
- Complete articles are posted from the journal, American Artifacts, on early microscope makers, hand corn shellers, early surveying instruments, a variety of quack medical devices, as well as information on early patents.
- http://www.americanartifacts.com/smma/index.htm