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Can anyone tell me about this old Japanese telescope?

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21 replies to this topic

#1 irstaxhelp

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Posted 29 June 2020 - 02:01 PM

Here are pics.    One scope looks to the side.

 

https://photos.app.g...31bg3TyfWy4eWD8

 

 

Thank you for any help!

 

Attached Thumbnails

  • 20200629_105218 sm.jpg
  • 20200629_104137sm.jpg

Edited by irstaxhelp, 29 June 2020 - 02:07 PM.


#2 Terra Nova

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Posted 29 June 2020 - 02:33 PM

It looks to me like old 80mm WWII flak binoculars, missing the left objective.



#3 ANM

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Posted 29 June 2020 - 02:48 PM

Part of a rangefinder?

 

PS: missing the left objective, prism, and connecting hardware?


Edited by ANM, 29 June 2020 - 03:02 PM.


#4 starman876

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Posted 29 June 2020 - 03:17 PM

I think Terra was close.  However, the other side does not look like part of a binocular.  Maybe some sort of distancing device.  Maybe some more pictures would help.  Also, the guys in binocular forum might be more help.


Edited by starman876, 29 June 2020 - 03:21 PM.

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#5 Paul Hyndman

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Posted 29 June 2020 - 04:31 PM

Scratching my head over this one?!?

 

Simultaneous viewing of target and a superimposed image (TSD... Tactical Situation Display or ?) with each side being illuminated. Yet, there are fold-able sights on this puppy (color me confused) shrug.gif



#6 irstaxhelp

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Posted 29 June 2020 - 05:09 PM

makes sense.    Thank you.   I will have to see if I can get a stand for it!   



#7 irstaxhelp

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Posted 29 June 2020 - 05:11 PM

Here is the other side

Attached Thumbnails

  • 20200629_150610small.jpg


#8 irstaxhelp

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Posted 29 June 2020 - 05:11 PM

Looks like it can plug in for a light maybe.   Surely not nightvision!



#9 icomet

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Posted 29 June 2020 - 05:29 PM

That's really different. Let us know how it works, etc.

 

Clear Skies.



#10 Terra Nova

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Posted 29 June 2020 - 07:01 PM

It sure looks like it was made from or adapted from flak binoculars. And I think the guess that it was some sort of a range finder (made from such or by the makers of such) is a good one. Have you checked any of the Militaria websites? They have some devoted to particular wars and militaries. Maybe check one for WWII Japanese?



#11 ccwemyss

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Posted 29 June 2020 - 08:12 PM

Does the main scope have any sort of reticle or crosshair? Just guessing that the side scope was looking at altitude and azimuth circles from the mount, so one eye could be tracking through the main scope while the other eye could give a simultaneous readout of position, once an observer was trained to see both at once.

 

Chip W. 


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#12 telesonic

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Posted 29 June 2020 - 08:49 PM

Does the main scope have any sort of reticle or crosshair? Just guessing that the side scope was looking at altitude and azimuth circles from the mount, so one eye could be tracking through the main scope while the other eye could give a simultaneous readout of position, once an observer was trained to see both at once.

 

Chip W. 

That was kind of my line of thinking as well.

 

I've searched around on the old google, and haven't found anything quite like this.... so it's an oddity for sure. The only thing that I can probably say that might help - I did find some references to the TOKO mark possibly being Tokyo Optical Corp. Which would, I think put this around the time of WW2 (Imperial Japan) but it may be possible that this mark was used later as well....? 

 

Interesting rabbit hole, and I'm curious as to what the view is like in that.... among other things. Weight... etc.

 

Regards,

Temp



#13 irstaxhelp

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Posted 30 June 2020 - 12:02 AM

Here are a couple more shots.  It does have cross hairs looking through both lenses.  Both sides focus.   Note the electrical attachment at the top too.   It appears to be a light that feed to both scopes.  20200629_215129sm.jpg

 

Also has the two guides that line up.  I moved them up for the picture.   It is all one unit so you cannot separate the two sides.  

 

Toko is the make


Edited by irstaxhelp, 30 June 2020 - 12:11 AM.

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#14 irstaxhelp

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Posted 30 June 2020 - 12:03 AM

20200629_215122sm.jpg



#15 irstaxhelp

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Posted 30 June 2020 - 08:51 AM

Another question.  Can I buff this thing out to a bright shine?  

 

Thx for all the good help here.   I think this is a very unusual piece of history.   Wish I had the mount.  I bet much would be answered!

 

John



#16 Terra Nova

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Posted 30 June 2020 - 09:08 AM

Another question.  Can I buff this thing out to a bright shine?  

 

Thx for all the good help here.   I think this is a very unusual piece of history.   Wish I had the mount.  I bet much would be answered!

 

John

That would seriously devalue it. Clean the grime but leave the patina.


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#17 Spectral Joe

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Posted 30 June 2020 - 11:27 AM

Does the main scope have any sort of reticle or crosshair? Just guessing that the side scope was looking at altitude and azimuth circles from the mount, so one eye could be tracking through the main scope while the other eye could give a simultaneous readout of position, once an observer was trained to see both at once.

 

Chip W. 

Very close, this is the telescope from a Japanese WWII searchlight comparator, a device that was used to aim antiaircraft searchlights using inputs from acoustic directors before radar was widely available. This is a true rarity, too bad the rest of the thing is gone. It was attached to an arm on the rest of the device via the boss on the right side, and easily detached, It's the sort of thing a GI would pull off and take home, the rest weighed over a hundred pounds. The right side was used to watch for the target and the left side looked at indicators that showed the output from the acoustic corrector that calculated the position of the target based on sound travel time.

 

Joe


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#18 irstaxhelp

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Posted 30 June 2020 - 12:10 PM

Thank you ISS



#19 irstaxhelp

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Posted 30 June 2020 - 12:12 PM

Wow thank you Joe.  That completely makes sense.   

 

I spent the good part of the day searching for other pics or similar numbers and came up with nothing.  Wow how cool!



#20 irstaxhelp

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Posted 30 June 2020 - 12:24 PM

So like this

searchlight comparator.jpg

 

It is from this site 

http://quanonline.co....html#SEC-X-II2

(2) Searchlight comparator. The searchlight comparator illustrated in figure 314 is an instrument with which an observer, by keeping a plane in the crosslines of the telescope, automatically directs the searchlight on the plane.

 

 

Wow we figured it out and this is so cool to me!

 

Now I see where the electrical fits in.


Edited by irstaxhelp, 30 June 2020 - 12:33 PM.

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#21 Spectral Joe

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Posted 30 June 2020 - 05:57 PM

That's the gadget!


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#22 RichA

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Posted 01 July 2020 - 02:15 PM

Another question.  Can I buff this thing out to a bright shine? 

And sell it on ETSY...


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