Gebr. Mittelstrafs, (Mittelstrass), Magdeburg c. 1875
This is a relatively
large microscope. It is shown here photographed next
to a Zeiss IVa.
The firm Gebr.
Mittelstrass, Magdeburg was established by two
brothers, Carl and Otto, in 1867. The firm produced
and sold a variety of optical, physical,
chemical, and measurement apparatus. The above
advertisement is from 1903