Subject: German optical manufacturer's guidebook
From: Peter Abrahams
List member Lothar Esch loaned me a copy of:
Handbuch der Feinmechanik und Optik; verbunden mit firmenkundlicher und warenkundlicher Darstellung fuer die Industriezweige: Feinmechanik, Optik, Uhrenindustrie, Bueromaschinenindustrie, Medizinmechanik mit Orthopaedie. Berlin: Verlag fuer Fachliteratur Rich. Markewitz, 1950. Hans-Heinrich v. Stutterheim, editor. 436pp.
This book lists German manufacturers of instruments. Particularly interesting is the list 'Prismenfernglaeser', on page 351:
Chr. Beck & Soehne, Kassel.
Jos. Eschenbach, Nuernberg.
H. Fehrenbach & Co., Rathenow (Feldstecher-Rep.)
Gerh. Filtjen, Schwaebisch Gmuend.
Hensoldt & Soehne, Wetzlar.
Hertel & Reuss, Kassel.
Fritz Hofmann, Erlangen.
Koch u. Jaruschewitz, Berlin-Friedenau.
This seems to be a list of prism binocular manufacturers. I believe Fehrenbach, Filtjen, Hofmann, and Koch -- are unknown in the U.S. And others are practically unknown.
Binocular List #263: 18 July 2003
Subject: Nordiska; Nedinsco
I have found two small pieces of information that may be of interest to some:
1: The swedish Zeiss representation: Nordiska Instrument Bolaget AB, in short: Norinab, stopped their operation on july 1st, 1925, turning over all orders, and responsibilities to Zeiss Nedinsco in the Netherlands.
2: Zeiss Nedinsco changed their engravings of binoculars about august 1st, 1927. From this date, the engravings had the normal Carl Zeiss Jena logo in the middle, Nedinsco to the left, Systeem on top and Gravenhage to the right. The factory drawing of this change was dated June 22, 1927. --Michael Simonsen
Subject: C. Beck, Kassel; and aluminum
Well, the recent list, No. 262 mentioned C. Beck Kassel. And I happens to be looking for some information on one of their binoculars. Does anyone have a C. Beck Kassel 7x50 Binocular, named Luchs? I am interested in receiving pictures of the main markings, as well as an overall picture of this binocular. Please note, I like to have a real picture, I have a copy of a catalog covering it.
Seems Beck was trying their skills at Binoculars in the late thirties...With less than great success. Mostly center focused civilian models.
Same company is well known, when we talk microscopes. Trade mark: Beck Kassel above a triangle, with two overlapping circles at the sides, and with the letters: CBS inside the figures. I have presently one microscope with this marking, and will try to provide a picture.
About aluminium bodies. From what I have read, I understand that to make a binocular work, with a body of aluminium, you need to cover all inner surfaces with something that reduces corrosion: Paint, eloxidation or the like. One option mentioned is boiling the part in plain water,