Signed: Ernst Gundlach

Monocular Microscope, c. 1879

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The microscope is signed on two places, on the tube "Ernst Gundlach" and on the base "Gundlach". A similar microscope sold by Yawman & Erbe of Rochester N.Y. is also represented in this collection. It has a brass base instead of the cast iron base that is on the microscope shown on this page. The microscope shown on this page came supplied with two Gundlach objectives and two eyepieces. The main focus of the microscope can be accomplished by slip-tube or by rack and pinion, while the fine focus utilizes a micrometer screw mechanism. The mirror can be positioned at any angle relative to the stage including above the stage for illumination of opaque objects. The draw-tube is nickel plated.

Philip Yawman and Gustav Erbe were both employees of Bausch & Lomb. In 1880, they left that firm to start their own business in Rochester New York. For the greater part of the life of the firm, Yawman & Erbe primarily were involved in the manufacture of office furniture and equipment. However, for a very brief period in the early 1880's they manufactured microscopes. It appears that the production of microscopes was in collaboration with Ernst Gundlach, another former B&L employee. It is clear that it was Gundlach who produced the optics, but it is less clear which firm actually manufactured the stands. Both firms often sold the same model microscopes and, in fact, there are microscopes that bear dual signatures by both firms. For example, see the two "Nonpareil" model microscopes in this collection. Additionally, the walnut storage cases for all these microscopes are distinctive and identical. The microscope shown in the engraving taken from The Journal of the Royal Microscopical Society, 1882 was made by Ernst Gundlach and was named "The College Microscope". It is similar to the microscope shown on this page in many respects.

Gundlach College Microscope

Ernst Gundlach, monocular microscope, c. 1879. signed on the tube and base

As stated above, after the termination of his employment by Bausch & Lomb in 1878, Ernst Gundlach, for a brief period, worked with Philip Yawman and Gustav Erbe (also former employees of Bausch & Lomb) in the production of microscopes. It is clear that it was Gundlach who produced the optics, but it is less clear which firm actually manufactured the stands. Additional information about the Gundlach businesses in America is online.


Gundlach 1878 advertisment

Gundlach 1878 advertisment

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