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Double cone on inclined plane, C 1920

The mechanical paradox consists in a double cone which is able to climb up along an inclined plane. The double cone rises when the slope of the inclined plane is smaller than the product given by the tangent of half the cone’s angle and the tangent of half the angle of slide’s opening. So the phenomenon has nothing paradoxical, but it is in perfect accord with the laws of mechanics. Length Cone 32 cm and begin 20th century. Look for Read More...

Antique microscope 1897. Medical scientific.

A Victorian brass microscope by Ernst Leitz Wetzlar  c1897 and also marked with the retailers details ‘C. Baker 244 High Holborn London’. The stand carries the number ‘53502’ allowing us to date this microscope reasonably precisely. The microscope mirror is concave one side and flat the other, the concave side is marked around the edges, in working order and good condition but with some marks. In 1849, Karl Kellner founded the Optical Institute in Wetzlar, Germany, which in a few Read More...

Esmarch Military Anesthesia Kit

A good cased example of an Esmarch military anesthesia kit for use with chloroform. The set contains a mask, chloroform dripping bottle and tongue forceps. All elements are original to the kit. The last couple of inches of the strap that keeps the case closed has been restored–see last image.  The Wood Library site notes regarding kits of this type: “German surgeon Friedrich von Esmarch (1823-1908) introduced this inhaler in 1877. Cloth was stretched over the wire frame, providing a large Read More...

Antique case of glass eyes.

A boxed set of antique glass prosthetic eyes, historically used as fitting samples by ophthalmologists or opticians for patients needing ocular prostheses. This set date from the late 19th to early 20th century when glass eyes were produced primarily in Germany and France, renowned for their superior glass blowing techniques before WWII, this set is most likely of German origin. The protheses in this set are all veined except for the two clear examples. The case has a padded satin Read More...

Three full brass dividers by Adolf Deinert, Nuremberg, c.1740

A set of three rare full brass German pair of dividers bearing the hallmark of the famous weightmaker from Nuremberg, the wheel, Adolf Deinert. These three full brass pair of dividers measure 10,7cm, 9,9cm and 7,5cm lenght. The points are not reduced and the instruments are in genuine condition. A rare German signature on pairs of dividers. Read More...

Schrattenholz’s Abductor

A cased example of Schrattenholz s Abductor.Length of case: 10.5″ or 25cm.  At a quick glance it appears to a Baunscheidt Lebenswecker,a widely used mid-19th century counter-irritant or homeopathic device,* the only apparent difference being the ring that shortens the extension of the needles. That said, Schrattenholz had his own system and theories and in 1859 he published, Das neue Schrattenholz-Heilsystem der Abduction oder Selbstausleitung der Krankheitsstoffe durch Heilnadeln (Abductor) und concentrirte Gase (Heildünster), Habicht. Give the scarcity of surviving Read More...

C. Zeiss compound microscope, No 3966

A Carl Zeiss Jena Compound monocular with number 3966, Date1875-1880. In original mahogany box. with 3 oculairs and 2 objects. Measurements box 29 x 12 x 9 cm Look for shop information on www.vanleestantiques.com  Read More...

Brendel Salvia flower model, No 111, C 1880

The Salvia flower model, No 111, consists of five handpainted papier mache removable parts which are 15 times enlarged. The pistil can be secured with a pin in the petal and between the stamens. The flower tissues are hold together by hooks. The reproductive organs together are placed in the flowerbase. A wooden stem leads to the ebonized decorated base, which has blue sticker. The sticker is marked: ‘No. 111 Salvia Officinalis. L. II 1. flos  Commn Sage Salbei. Read More...

Brendel Linaria model No 110

A Brendel Linaria flower Model by Robert Brendel, circa 1880. The flower model consist of three parts. Brendel (1821-1898) started on the middle of the 19th century a factory for botanical flower shaped in breslau, now wroclaw in poland. Height 50 cm. Read More...

Apparatus for determining the boiling point on thermometers according to Regnault,

  Apparatus for determining the boiling point on thermometers according to Regnault, consisting of a brass vessel with a double-walled attachment with a filled thermometer tube.The original thermometer included has a scale ranging from minus 20 degrees Celsius to plus 460 degrees Celsius. In total 34 cm high    measure with the thermometer  47 cm high  The device will be shipped in secure packaging, and the price includes shipping. Read More...

Early 20th century anatomical plaster medical torso made by SOMSO

Early 20th century anatomical plaster medical torso made by SOMSO This early 20th century life size anatomical medical torso would have originally been used as a teaching aid. This entire object is made from plaster and hand painted and numbered. Stood on a wooden base 32 X 23 cm In total 75 cm highProfessionally packaged and sent by registered mail .Shipping costs in Europe € 25 worldwide € 50 Read More...

A German anatomical model of the larynx, by Bock-Steger

A German anatomical model of the larynx, by Franz Josef Steger after a design of Carl Ernst Bock, from the late 1800’s.Hand painted plaster, in great condition: I can only notice few chips on the base and the missing rear cover of the throat. .Life-size, overall height is 33 cm. There are 2 known versions of this model: this is the one with the tongue out of the mouth, my preferred one Read More...