Id german optical equipment

[Sturm78]

Hi all,

An artillery sight. I guess a Rundblickfernrohr 32....

Image from Ebay
Sturm78

[Sturm78]

Hi all,

A German WWI-era Flak rangefinder. Any idea about his official designation ?

Image from Ebay
Sturm78

[ChrisMAg2]

It looks like this one: --Goerz, 1,25m Entfernungsmesser für Feldartillerie.-- But it appears to be a (slightly) bigger model, like 1,4m.
And of course it could be an identical Carl Zeiss model.
A much more similar, boxed model (Goerz, 1,4m) is shown here: http://www.militaria-fundforum.com/show ... p?t=840645
For comparison, here is again the 1,25m: http://firstwartechnik.free.fr/Dbinoall.html

Regards
Christian M. Aguilar

[Sturm78]

Christian wrote
It looks like this one: --Goerz, 1,25m Entfernungsmesser für Feldartillerie.-- But it appears to be a (slightly) bigger model, like 1,4m.
And of course it could be an identical Carl Zeiss model.
A much more similar, boxed model (Goerz, 1,4m) is shown here: http://www.militaria-fundforum.com/show ... p?t=840645
For comparison, here is again the 1,25m: http://firstwartechnik.free.fr/Dbinoall.html

Thank you very much for your answer, Christian. ....It is difficult to ensure as my image is a bit blurry but maybe you are right...

Identifying the different models of rangefinders is quite complicated since they are all very similar and the photos are usually not very good ...

Regards Sturm78

[Sturm78]

Hi all,

Can anyone identify this rangefinder ?

Image from Ebay
Sturm78

[Sturm78]

Nobody ??

Well, here another image from Ebay. Any idea about this one ? ....from a coastal gun battery in Norway ...

Image from Ebay
Sturm78

[Natter]

from a coastal gun battery in Norway

Taken at Kopås (MKB 1./501 Dröbak).

[Sturm78]

Natter wrote
Taken at Kopås (MKB 1./501 Dröbak).

Thanks, Natter...
Do you know if the ranngefinder is the original Norwegian instrument of the battery or of German origin ?

Regards Sturm78

[Sturm78]

Hi all,

Any idea about this ?
I think it is an item associated with a coastal artillery battery

Image from Ebay
Sturm78

[Natter]

I think it is an item associated with a coastal artillery battery

Same as here it seems:
https://forum.axishistory.com/viewtopic ... 3#p2141473

[Sturm78]

Thanks Natter

range-finder with a vertical base.... I did not know this type of instrument
What was its operation?
Any aditional image ?

Sturm78

[Natter]

Not my field of expertice, but I think a vertical rangefinder of some sorts.
Maybe the same as this (photos from the firecontrol-exibition at Oscarsborg castle, Norway)?

[Janef]

Hi all,

Any idea about this ?
I think it is an item associated with a coastal artillery battery

Image from Ebay
Sturm78

It is an EM-3 vertical base rangefinder.

Em-3.jpg

JEF

[T. A. Gardner]

Those are variants of the "Depression" rangefinder. They work by measuring the angle to sea level at the target. The height of the rangefinder above sea level is known, so it's a simple trig calculation to get the range. These are sometimes called "base" rangefinders.

https://en.wikipedia.org/wiki/Depressio ... ion_finder

[Sturm78]

Thank you for your answers, JEF and T. A. Gardner

Regards Sturm78