on Oct 15, 2016
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F. W. SCHIECK BERLIN ANTIQUE BRASS PATENTED “REVOLVER-TRICHINENSKOP” MICROSCOPE WITH CIRCULAR DUAL GLASS PLATE COMPRESSORIUM – Circa 1885
This patented specialty microscope from this highly skilled and innovative German microscope manufacturer will be a very nice addition to any antique microscope collection
On the front face of the compass joint is a support for the substage mirror, which in this case is a brass yoke-mounted 38mm diameter plano-concave mirror
The stage has a recessed central aperture of 15mm that is designed to accommodate a small blue filter (not included)
There is a built-in 5mm diameter aperture stop on the underside of this aperture that also acts as a shelf to hold the filter
The front part of the stage also has a 15mm diameter linear slot cut into it to facilitate the forward and back movement of the dovetail mounted glass plate compressorium
The compressorium consists of two (2) glass plates each of which is 90mm in diameter and 3mm thick
Both plates have a 7mm hole in the center so that a threaded rod that extends up from the dovetail mount under the stage is able hold the plates in place atop the stage
This Schieck microscope has a unique feature not included in the patent description and not found on similar instruments made by Paul Waechter
When the microscope is set up in the vertical position and when the body tube is racked all the way down to its lowest level, the microscope stands about 10.5 inches tall
When the body tube is racked all the way out, the instrument stands about 11.5 inches tall
By 1850 his mid-size microscopes were selling at a cost of one hundred dollars each, which, in the day, was equivalent to half the annual salary of a well-paid mechanic
In the mid-19th Century both Schieck and Plossl were producing nearly identical microscope models – differing only in minor shape and sizes
His son continued to operate the business as F. W. Schieck Optical Institute in honor to his father into the early years of the 20th Century
Between the years 1870 and into the early years of the 20th Century, the Schieck firm produced a large number of microscopes for the examination of trichinae in meat
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