Last night, I came across this paper, written at the University of Hamburg, on the german instrument maker Merz.
Primary objective seems to be astronomical instruments, but there are a few interesting military items as well.
https://ediss.sub.uni-hamburg.de/volltexte/2015/7310/
Choose Dokument 1 for download.
Now, I expect that not everyone here reads german, so, try and scroll down to these pages:
139 Drawing of a rangefinder intended for military use 1865.
142-144, Navy double glas 1865
154-160, Military binoculars 1880-ies
205 Prismatic Binoculars 1922
220 Exhibits from the Fraunhofer workroom. ( I just love when a Lathe is made from wood.)
495 Catalog military glasses year 1900.
On page 155 the marking BMF for Bayersche Militär Fernrohr is mentioned.
Here is one such telescope offered on ebay:
https://www.ebay.de/itm/G-S-Merz-B-M...wAAOSw3PtdRZRi
For those interested, the last part of the text also has some information on the companies Steinheil and Rodenstock.
It has been edited and published as a book as well:
https://www.amazon.de/Wissenschaftli...2581230&sr=8-1
Primary objective seems to be astronomical instruments, but there are a few interesting military items as well.
https://ediss.sub.uni-hamburg.de/volltexte/2015/7310/
Choose Dokument 1 for download.
Now, I expect that not everyone here reads german, so, try and scroll down to these pages:
139 Drawing of a rangefinder intended for military use 1865.
142-144, Navy double glas 1865
154-160, Military binoculars 1880-ies
205 Prismatic Binoculars 1922
220 Exhibits from the Fraunhofer workroom. ( I just love when a Lathe is made from wood.)
495 Catalog military glasses year 1900.
On page 155 the marking BMF for Bayersche Militär Fernrohr is mentioned.
Here is one such telescope offered on ebay:
https://www.ebay.de/itm/G-S-Merz-B-M...wAAOSw3PtdRZRi
For those interested, the last part of the text also has some information on the companies Steinheil and Rodenstock.
It has been edited and published as a book as well:
https://www.amazon.de/Wissenschaftli...2581230&sr=8-1
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