Author Topic: A triumph of Swiss engineering  (Read 672 times)

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Alex Lipton

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A triumph of Swiss engineering
« on: June 30, 2018, 06:00:46 PM »
Dear All:

Here are all three knows Kern Focalpines 6, 7, 10.

Although 6 is shown in Seeger's maroon book, it is very rare.

The Focalpine 7 is most interesting since it is one of the very few MILITARY central focus binos - this one for the RAAF.

Comments welcome

Best

Alex

Niall McLaren

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Re: A triumph of Swiss engineering
« Reply #1 on: June 30, 2018, 06:30:55 PM »
A nice clutch - I like the RAAF one especially. ;)
"A little bit of something beats a whole lot of nothing." - Little Richard

Alex Lipton

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Re: A triumph of Swiss engineering
« Reply #2 on: June 30, 2018, 07:39:26 PM »
Thanks. What I like most is that they use INTERNAL focusing like U-Boot 7x50.
All three have the same body.

Rodolfo Peirano

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Re: A triumph of Swiss engineering
« Reply #3 on: June 30, 2018, 07:55:23 PM »
Congrat Alex,
very nice binoculars. I agree with Niall about the RAS one.
I did not know that England had even bought from Switzerland  :)
everyone can learn from everyone - Rodolfo

Alex Lipton

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Re: A triumph of Swiss engineering
« Reply #4 on: June 30, 2018, 08:38:28 PM »
Thanks Niall and Rodolfo,

Much appreciated.

RAAF is Royal Australian Air Force.

Best

Alex

Rodolfo Peirano

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Re: A triumph of Swiss engineering
« Reply #5 on: June 30, 2018, 09:09:05 PM »
RAAF is Royal Australian Air Force.

Ops. . .sorry for my mistake  :-[ :-[ :-[
everyone can learn from everyone - Rodolfo

Frank Lagorio

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Re: A triumph of Swiss engineering
« Reply #6 on: June 30, 2018, 09:17:32 PM »
That's the first 6x Focalpin I've actually seen although I've seen it referenced in advertisements. 

I had one of the 10x60's and its build was unusual and highly innovative. For one thing its internal focusing was achieved not by movement of an eyelens but by movement of a 3rd objective lens located behind an air-spaced tele-objective lens. Also, its ocular end prisms are not normal Porro I prisms. One slope of the prism is set at 45 degrees to the base, but the other slope (the slope first receiving the light beam) is not necessitating a reflective coating (probably silver) be applied to its surface in order that all the light be reflected i.e. total internal reflection be achieved. 
« Last Edit: June 30, 2018, 09:44:42 PM by Frank Lagorio »

Alex Lipton

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Re: A triumph of Swiss engineering
« Reply #7 on: June 30, 2018, 09:40:47 PM »
Hi Frank,

These inner working bits are highly fascinating!

I take my hat off to you for not being afraid of disassembling these precious instruments and being able to put them back together!

As I said - a real triumph of Swiss engenuity.

Best

Alex

Winfried Tuerk

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Re: A triumph of Swiss engineering
« Reply #8 on: June 30, 2018, 10:52:59 PM »
Kern developed and offered really a great varity of optical gear. I have got a couple of civilian and military binoculars and all copies are inovative and really well made.

My near mint Alpine Stereo 8x30 is the sharpest 8x30 Porro-1-binocular of the collection.

https://www.kern-aarau.ch/kern-extern/produkte-von-a-bis-z.html
live without binoculars is possible but senseless - paraphrasing Loriot "live without puc is possible ..."

Alex Lipton

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Re: A triumph of Swiss engineering
« Reply #9 on: June 30, 2018, 11:48:26 PM »
This one?

Winfried Tuerk

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Re: A triumph of Swiss engineering
« Reply #10 on: July 01, 2018, 08:46:46 AM »
Yes Alex, the model with the focus weel at the distal end of the axis.

The fov is sharp up to the edges. All mechanics work smoothly and everything is made as solid as possible.

While Kern continued to made high grade products, in the 1960's Germany many manufacturers of optical gear diligently were going to reduce mechanical quality. Maybe due to the quantities of cheap Japanese binoculars flocking Europe?
live without binoculars is possible but senseless - paraphrasing Loriot "live without puc is possible ..."

Niall McLaren

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Re: A triumph of Swiss engineering
« Reply #11 on: July 01, 2018, 09:33:26 AM »
Kershaw (post WW2) also placed the focus wheel at the objective end. It took a little getting used to (I'm a traditionalist) but after a while seems totally natural.

I've had a few Kerns but not Focalpines and appreciate the photos you've all posted. Frank's disassembled shots are particularly illuminating. ;)
"A little bit of something beats a whole lot of nothing." - Little Richard

Alex Lipton

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Re: A triumph of Swiss engineering
« Reply #12 on: July 01, 2018, 09:27:22 PM »
A couple more instruments from Kern.

Alex

Rodolfo Peirano

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Re: A triumph of Swiss engineering
« Reply #13 on: July 01, 2018, 11:44:18 PM »
Alex  XPS files :-\  (Microsoft’s alternative to PDF files) better PDF or JPG  ;)

everyone can learn from everyone - Rodolfo

Alex Lipton

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Re: A triumph of Swiss engineering
« Reply #14 on: July 01, 2018, 11:46:00 PM »
Thanks Rodolfo,

Will keep in mind for the future.

Alex