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Archives of an email list on the history of binoculars. - page 20 / 150

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  So the questions are, who designed these, where were they made, why are they marked Spencer, & why is there so little record of them at AO & elsewhere - given all the Marks & Mods, there must have been tens or hundreds of thousands made.

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This chart of Spencer WWII models displays well in Courier font, after you remove the line breaks that email will insert:

SCHEDULE OF BINOCULARS, NAVY DEPARTMENT, BUREAU OF SHIPS, FILE NUMBER S2407 - 533074.  8|2|44.

MK  | MOD  | GENERAL ARRANGEMENT  | CONTRACTOR  | MAGNIFICATION  | APERTURE  | FIELD (DEGREES) | EYE RELIEF, MM  | TRANSMISSION %  | BUREAU  | STATUS (1944)  | REMARKS

3 | 0 | -------- | SPENCER| 7 | 50 |7d39'| 14.5 | ---- | SHIPS | OBS.  | TAPERED AXLE

3 | 1 | 481746-S | SPENCER| 6 | 30 |8d54'| 11.3 | 55   | SHIPS | OBS.  | COMMERCIAL STOCK

3 | 3 | -------- | SPENCER| 6 | 30 |8d54'| 11.3 | 55   | SHIPS | OBS.  |

3 | 4 | -------- | SPENCER| 7 | 50 | --- | ---- | ---- | SHIPS | OBS.  | COMMERCIAL STOCK

3 | 5 | 494021-S | SPENCER| 7 | 50 |7d39'| 14.5 | 57.8 | SHIPS | OBS.  | COMMERCIAL STOCK

13| 5 | 300872-O | SPENCER| 7 | 50 |7d39'| 16   | 57.8 | SHIPS | OBS.  |

17| 0 | -------- | SPENCER| 7 | 35 |7d38'| 11   | 80   | AERO  |EXPMTL.|

19| 0 | 300853-O | SPENCER| 6 | 30 |8d54'| 11.3 | 55   | MARINE| ----- | MIL SCALE - LEFT BARREL

20| - | 300864-O | SPENCER| 7 | 35 |7d10'| 10.7 | 56   | MARINE| ----- |

30| 0 | 494040-S | SPENCER| 7 | 50 |7d39'| 14.5 | 57.8 | SHIPS | CURR. | WATERPROOF

31| 0 | 481756-S | SPENCER| 6 | 30 |8d54'| 11.3 | 55   | SHIPS | OBS.  | COMMERCIAL STOCK

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Binocular List #256: 12 May 2003

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Subject: Albert Koenig

From: Peter Abrahams

Albert Koenig was a lens designer for Zeiss, who was responsible for the many types of Koenig eyepiece and the Zeiss 'B' apochromatic telescope objective circa 1930.  He was co-designer of the Abbe-Koenig prism and accomplished much more in a long career at Zeiss.

There has been no English language information on Koenig.  A text has been posted with a summary of his optical work; and a translation, by Chris Plicht, of Horst Koehler's tribute to Koenig.

http://home.europa.com/~telscope/koenig.txt

Any further information on Koenig would be very welcome.

======================================================

From: Peter Abrahams

I have posted two images of a very unusual binocular by the German optical company Merz.

Courtesy of the  Louwman Collection of Historic Telescopes.

http://home.europa.com/~telscope/Merz-binoc2.jpg     99kb

http://home.europa.com/~telscope/MerzBinoc.jpg     123kb]

Some information about Merz is available at:

http://home.europa.com/~telscope/tsgerman.txt

=========================================================

Subject: Deutsche Optik new model

From: "Mike" <mike@___heoptik.com>

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