C. Kellner's nachfolger, FR. Belthle in Wetzlar, No. 945, c. 1866
(Objectives signed Belthle & Leitz)
The microscope was found with three eyepieces numbered I, III, and V and four objectives; the number 1 is signed " B.L.", the numbers 3 and 7 are signed "Belthle & Leitz", and the number 4 is unsigned.
This is an example of the small sized model produced by the firm corresponding to the model 3. See: Fr. Belthle, Nachfolger von C. Kellner, in Wetzlar- Price list for 1866.
Represented in this collection is another example of this model having a different selection of optics and a different layout within the wood storage case.
For more information about this microscope and related instruments see the article:
Some Early Microscopes from the Optical Institute in Wetzlar
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