E. Leitz 4-axis Berek universal stage for the petrographic microscope, early 1920s

E. Leitz 4-axis Berek universal stage for the petrographic microscope, early 1920s

Stock Number: FG_21002

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An early version of the Fedorov 4-axis universal stage made by the Ernst Leitz firm, a rare early version designed by Max Berek in the 1920s and used during this decade.

Dimensions

Case: 19 x 13 x 8 cm, weight: 1.38 kg.

Circa

1920-1930

Country of manufacture

Germany

Categories: Scientific, Microscopy, Mineralogy & Gemmology, Natural history, Physics & Chemistry, Other Technology Antiques

Description

This is a rare early form of the Fedorov 4-axis universal stage of the early 20th century, made by the firm of Ernst Leitz, Wetzlar, Germany after a design by the physicist, mathematician, and crystallographer Max Berek (1886-1949). The universal stage is an accessory of the petrographic microscope, used to observe planar features in crystals such as twinning, cleavage, and principal optical directions, providing details of the relation between their optical and crystallographic orientations. These highly specialized compound instruments were intended for highly specialized work by optical mineralogists, petrographers, and crystallographers were made in very small numbers. The last ones were made by the Lomo optical company in the early 1970s. As can be seen in the reference (Fig. 4), the instrument seen here was made to fit the 1920s microscope models by Leitz, Zeiss, and some other contemporaneous European makers.

Reference: Kile, D.E. 2009. The universal stage: The past, present, and future of a mineralogical research instrument. Geochemical News 140: https://www2.humboldt.edu/scimus/LibDisp_CurChoice_2017/GeoChemSoc_UnivStage.pdf 

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IL Gilgamesh

Gilgamesh was the mythological hero of the cultures of ancient West Asia, who set out on a journey in which he sought youth and eternal life.
Fleaglass Gilgamesh is located in Israel. As an archaeologist researching the material culture of the distant past and using the microscope as a major research tool, for more than two decades I have collected microscopes from the first 300 years of existence of this amazing tool and researched the cultural context of their use. Passion has become an obsession and I cultivate the full and almost unique West Asian collection of historical microscopes. Respectively, I put up for sale surplus or interesting items from the collection. I would be happy to advise any interested collector free of charge. Needless to say, I would love to send photos, information and bibliographic references, and discuss the sale details of the items offered here for sale.

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