Goldberg Tel-Aviv Object?

[pigeonman]

found this at a estate sale for a couple bucks and can't figure out what it is,no info on internet.looks like some kind of sight for measuring something.

 

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[bologna321]

What does the black end look like from the end? Does the piece on the bottom come off?

 

[Tpmetal]

I've seen something similar used in beer brewing?

 

[Tpmetal]

something about putting liquid in there to view sugar content or something? i dunno shot in the dark

 

[bigcaddy64]

A refractomometer for measuring Brix

 

[Tpmetal]

A refractomometer for measuring Brix

there we go, a better name for my jumbled mess. haha

 

[Mackaydon]

I believe the spelling is refractometer.
Don...

 

[Oddjob]

Looks like one of those things the mechanics in the Army used to check out batteries and coolant. They would put a little drop on it and then look into the light.

Asked one of them once what the heck that was and they called it a Duo-Check. Anyway found one on ebay link. Yes I know I am likely wrong, just saying it looks like one of them things.
https://www.ebay.com/p/Reichert-Duo-chek-7181-Coolant-and-Battery-Tester/1420390306

 

[randazzo1]

This is total web research (nothing I knew) but apparently the guy who made it is emmanuel goldberg. I found that on a site about compasses.

 

[randazzo1]

https://en.m.wikipedia.org/wiki/Emanuel_Goldberg

 

[randazzo1]

Got to him from this site - go down to the bottom
Under the israeli compasses: http://compassmuseum.com/hand/hand_2.htm

 

[namxat]

This is total web research (nothing I knew) but apparently the guy who made it is emmanuel goldberg. I found that on a site about compasses.

Yes, I remember the name. Before Nazi time he was one of the founders of Zeiss Ikon. Should be a quality instrument.

Greets Namxat

 

[Mackaydon]

The case is the same and the product looks similar to this Goldberg hand held refractometer.
https://www.ebay.com/itm/Reichert-G...and-Held-Refractometer-1310400A-/281889158866
Don.......

 

[diggummup]

Looks like one of those things the mechanics in the Army used to check out batteries and coolant. They would put a little drop on it and then look into the light.

Asked one of them once what the heck that was and they called it a Duo-Check. Anyway found one on ebay link. Yes I know I am likely wrong, just saying it looks like one of them things.
https://www.ebay.com/p/Reichert-Duo-chek-7181-Coolant-and-Battery-Tester/1420390306

That's also a type of refractometer

 

[bigcaddy64]

That's also a type of refractometer

thats why coolant has a bit of sweetness to it

 

[pigeonman]

thanks for solving this mystery