G. Langguth Jr., Optician, Chicago  

c. 1865

 G. Langguth Jr., Optician, Chicago c. 1865

 G. Langgruth Jr., Optician, Chicago  in case

Illustration found with this microscope. Note the alternate placement of the fine adjustment knob.:

 G. Langgruth Jr., Optician, Chicago illustration accompanying the microscope

There is evidence that this microscope and similar microscopes signed by other makers were actually made by Samuel Murset of Philadelphia. J. G. Langguth Jr. was an importer and dealer in optical goods located at 117 Randolph St, Chicago.

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