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Microscope Museum Collection of antique microscopes and other
scientific instruments |
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Microscope, drawing and projection
apparatus “Promi” by W & H Seibert Microscope, drawing and projection
apparatus “Promi” by W & H Seibert, probably
dated from the 1930s. The instrument is engraved with “W & H Seibert, Wetzlar” and the serial number 32222. This instrument was
described in an article by Paul Hedicke in 1927
(Figure 1). Wilhelm and Heinrich Seibert were brothers who worked for Carl
Kellner’s optical business in the 1850s, in Wetzlar,
together with Ernst Gundlach. In 1859, Gundlach started his own microscope
manufacturing firm, and the Seibert brothers also joined this company as
employees. This company entered in debt and Gundlach left for England in
1860. Later, in 1865, Gundlach returned and, this time in Berlin, he started
a new optical firm to which the Seibert brothers also joined in about 1866.
In 1872, the Seibert brothers joined Georg Krafft
and bought the firm from Gundlach, and he emigrated to the USA. The firm
moved to Wetzlar and was initially named Seibert
& Krafft (1871 – 1884). In 1884, the firm
changed the name to W & H Seibert. Note: item kindly donated by Mark
Hobbs (Caterham, England) in November 2023. Figure 1. Microscope, drawing and projection apparatus “Promi” by W & H Seibert, as featured in a 1927
article by Paul Hedicke entitled “Ein neuer Zeichenapparat, speziell für entomologische Zwecke”,
published in the journal “Deutsche Entomologische
Zeitschrift (Berliner Entomologische
Zeitschrift und Deutsche Entomologische
Zeitschrift in Vereinigung)”:
(A) the instrument as a drawing device; (B) the instrument with tube,
eyepiece, light source and object holder for insects and other objects; and
(C) the instrument as a microscope. |