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A decorative brass sundial Germany, early/mid-18th century

Model of a compass sundial with a particularly decorative cutout, made of brass, unsigned but German, datable to the mid-18th century. The dial has only one latitude, apparently for Berlin. Furthermore, comparisons with several dials, signed by Essling or Koch in Berlin, reveal similarities in the style of the letters and the cutout of the gnomon. The dial measures 7 cm in diameter, and the plate 7.5 x 6.5 cm. Good condition, complete with its protective cap. Read More...

A fine three draw telescope by Plossl in Wien, circa 1830

A very fine example of a three drawtubes travelling telescope in brass and mahogany signed \”Plossl in Wien\”, circa 1830. The telescope measures 17,2 by 48,7cm lenght. It preserves its cap for the objective and its slide clap for the eyepiece. Its optics gives a fine and sharp image. The telescope preserves also its leather traveling case (some small accident on the two sides).   Read More...

~RARE AND FINE LEITZ UT-4 UNIVERSAL ROTATING STAGE~

A fine example of the E. Leitz universal rotating stage (UT-5) for optical investigations of crystals using the Fedorov method. Signed  Leitz, Wetzlar, GERMANY this Leitz stage accessory has the A1 – A4 axes for greater stability and simplified operation. The Wright arcs are present. This seldom seen stage was intended primarily for classroom demonstration and for use with a universal stage refractometer. Rarely used with ALL inserts marked with their refractive indices.  Mahogany case measures 9 x 6 1/2 x Read More...

4 anatomical models to teach a deaf person the pronunciation of letters and sounds

4 amazing anatomical models to teach a deaf person the pronunciation of letters and sounds, showing the right position of the tongue and of the mouth/lips, I’d guess from the late 1800’s and most likely from a German maker. Hand painted heavy plaster, each of them comes with the “represented” letters/sound embossed in the low right corner: “gh”, “f”, “g”, “j”. In great condition, just few light traces of the age, measurements of each model are 30 x 24 cm Read More...

Extremely rare mine compendium made in Germany or Austria at the early 17th century

Museum piece.   Extremely rare Mine Compendium, Germany or Austria, early XVIIth century. This compendium consists of a hinged wooden box revealing a set of 4 engraved antler instruments. The inside of the box is covered with polychrome vat paper. Two hinges and a brass hook open and close the box. In order of arrangement in the box: – A folding square, made of wood and antler, with two graduated arms joined by a brass hinge. – A small movable antler ruler ending in a Read More...

Universal pocket sundial in disc shape made circa 1700 in Augsburg attributed to Johann Martin

This disc-shaped pocket sundial is made of white metal. It is engraved on both sides, one of which is equipped with a fold-down brass gnomon, while the other has a movable gilt-copper index with a suspension ring.  The face forming sundial is engraved with several vertical hour lines ranging from 2 to 11 o’clock (‘Orientale’ = Eastern) in the upper part and from 1 to 10 o’clock in the lower part (‘Occidentale’ = Western). These lines intersect the lines of Read More...

Rare mechanical equinoctial pocket sundial signed Nicolaus Rugedas Augustae made in Augsburg circa 1700

Silver and gilt-brass mechanical equinoctial pocket sundial, for latitudes between 30 and 65 degrees north, made by Nicolas Rugendas III (1665-1745). It is housed in a black fish skin case with brass hinge and hooks.   The round silver case opens with a hinge. The outer faces are engraved with a list of cities and their latitudes inside a laurel wreath. All around, and on each side, there is a frieze of stylised leaves. The inside reveals a compass, a silver Read More...

Carl Adami 13 inch terrestrial globe, Berlin, 1900.

Carl Adami 13 inch terrestrial globe, by Dietrich Reimer, Berlin, Germany, 1900. “C. ADAMI’S ERDGLODUS neu bearbeitet und gezichnet von H. KIEPERT. Dietrich Reimer, Berlin. 1900 (E.Vohsen) Wilheln Str. 29.“ Course fur HandelsdampfermitAngabe der Entfurnugen in secmeilen (Course for merchant steamers with distances in seconds). Steamer lines and cables indicated. Height: 62 cm. Globe diameter: 33cm.   Published by Dietrich Reimer Verlag, cartography by Carl Adami (1802-74 ) revised by Heinrich Koepert. Verlag Dietrich Reimer founded in 1845. Read More...

Obstetrical anatomical model, German, possibly Bock-Steger

A great German obstetrical model, from the second half of 1800’s. It’s not branded but it definitely feels like a Bock-Steger production. Actually it comes from the University of Leipzig, where Karl Bock worked. It was stored in the house of a former professor for anatomy from Halle until last year and you can see in the photos its original conditions: I always love to see how such treasures can sleep for decades surviving oblivion, 2 World Wars, relocations… before being Read More...

Rare spirit fired locomotive of a Stirling No 1

A fine late 19th century spirit fired steam locomotive 4.25″ gauge  Stirling No 1,  4-2-2  Read More...

C1896 Variant of Weller’s Aseptic Anesthesia Mask

Variant of Weller’s Aseptic anesthesia Mask.This example appears to be German in origin and has a registry number that dates it to 1896. Our example was probably made some years later, as it is all metal–see below. It is in vg condition. The Wood Library of Anesthesia site, shows an earlier English version of this mask and provides the following details: “In 1868, two decades after the introduction of nitrous oxide anesthesia, Chicago surgeon Edmund Andrews, M.D. (1824-1904) advocated the Read More...

“Fructulet”: Nassauer’s 1920s Pessary for facilitating fertilization

“Fructulet”: Nassauer’s 1920s Pessary for facilitating fertilization. Length of instrument: 2.5″. Box and instrument in vg condition. Donna J. Drucker, in her 2023 MIT Press monograph FERTILITY TECHNOLOGY,  notes: ” To take another example, the Munich-based gynecologist Dr. MaxNassauer (1869–1931) encouraged patients to use a pessary that hedesigned, the Fructulet, which had a flat base to occlude the vaginal canaland a stem that kept the cervix open so that sperm were not blocked fromreaching the uterus. Nassauer’s Fructulet was subject to Read More...