Forums :: Resources :: Features :: Photo Gallery :: Vintage Radio Shows :: Archives :: Books
Support This Site: Contributors :: Advertise


It is currently Dec Tue 12, 2017 5:08 pm


All times are UTC [ DST ]





Post New Topic Post Reply  [ 10 posts ] 
Author Message
 Post subject: Can anyone ID this meter, with shunts?
PostPosted: Dec Thu 07, 2017 10:49 pm 
Member

Joined: Aug Mon 29, 2011 4:08 am
Posts: 2341
Location: The High Plains, but not drifting (79007).
I have this AC/DC current & voltage meter. The bare range is 2mA/1.2V AC, 2mA/0.1V DC. The shunts extend the range in increments up to 30V and 600mA.

I can't see any markings, except for bmr in tiny letters on the face and looking inside isn't much help either. Anybody recognize it?

Attachment:
mm1.jpg
mm1.jpg [ 66.18 KiB | Viewed 330 times ]


Attachment:
mm2.jpg
mm2.jpg [ 48.63 KiB | Viewed 330 times ]


Attachment:
mm3.jpg
mm3.jpg [ 65.46 KiB | Viewed 330 times ]


Attachment:
mm4.jpg
mm4.jpg [ 63.74 KiB | Viewed 330 times ]


Attachment:
mm5.jpg
mm5.jpg [ 49.77 KiB | Viewed 330 times ]


Top
 Profile  
 
 Post subject: Re: Can anyone ID this meter, with shunts?
PostPosted: Dec Fri 08, 2017 1:28 pm 
Member

Joined: Nov Wed 30, 2016 7:35 pm
Posts: 414
VERY cool!! No idea, but it looks kind of "Weston" or "Jewell" ish ............


Top
 Profile  
 
 Post subject: Re: Can anyone ID this meter, with shunts?
PostPosted: Dec Fri 08, 2017 4:24 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 2963
Location: Seattle WA US
No text, just numbers and symbols. Comma rather than decimal point. That makes it language independent. Probably European manufacture, but might be Asian, around 1950.

-Chuck


Top
 Profile  
 
 Post subject: Re: Can anyone ID this meter, with shunts?
PostPosted: Dec Fri 08, 2017 6:21 pm 
Member
User avatar

Joined: May Wed 18, 2011 2:40 am
Posts: 3255
Location: Littleton, MA
That is just beautiful.

_________________
Steve Byan http://www.byan-roper.org/steve/steve-at-play/


Top
 Profile  
 
 Post subject: Re: Can anyone ID this meter, with shunts?
PostPosted: Dec Fri 08, 2017 9:45 pm 
Member

Joined: Aug Mon 29, 2011 4:08 am
Posts: 2341
Location: The High Plains, but not drifting (79007).
Thanks, guys. Yes, it really is pretty.

Now that you mention Europe, Chuck, I remember my friend, from whom this came, saying that it was German. Sadly, he's no longer with us, so I can't ask him how he knew.


Top
 Profile  
 
 Post subject: Re: Can anyone ID this meter, with shunts?
PostPosted: Dec Sat 09, 2017 8:24 am 
Member

Joined: Sep Thu 23, 2010 6:37 am
Posts: 9410
Location: Powell River BC Canada
~

Attachment:
Firma Hartmann  Braun  Frankfurt.jpg
Firma Hartmann Braun Frankfurt.jpg [ 162.93 KiB | Viewed 179 times ]

_________________
de
VE7ASO VE7ZSO
Amateur Radio Literacy Club. May we help you read better.
Steve Dow
ve7aso@rac.ca


Top
 Profile  
 
 Post subject: Re: Can anyone ID this meter, with shunts?
PostPosted: Dec Sat 09, 2017 12:15 pm 
Member

Joined: Jun Fri 19, 2009 6:34 pm
Posts: 7197
Location: Long Island
Hard to say for sure, but very likely European. Note that the meter movement is an inside pivot type which was a design that enjoyed brief popularity in the 1930s in the US. It supposedly made for smaller, lighter, more rugged meters but assembly and repair were of course more difficult. Single-pivot or unipivot versions have to be used on level, horizontal surfaces.

_________________
"Hell, there are no rules here--we're trying to accomplish something!"

Thomas A. Edison


Top
 Profile  
 
 Post subject: Re: Can anyone ID this meter, with shunts?
PostPosted: Dec Sat 09, 2017 8:28 pm 
Member

Joined: Sep Thu 23, 2010 6:37 am
Posts: 9410
Location: Powell River BC Canada
It is an AC DC meter. But it looks like something a school would use.
Each bench could have one, so a wide variety of experiments could be done.

What part of the world was it found in ?

_________________
de
VE7ASO VE7ZSO
Amateur Radio Literacy Club. May we help you read better.
Steve Dow
ve7aso@rac.ca


Top
 Profile  
 
 Post subject: Re: Can anyone ID this meter, with shunts?
PostPosted: Dec Sun 10, 2017 12:42 am 
Member

Joined: Aug Mon 29, 2011 4:08 am
Posts: 2341
Location: The High Plains, but not drifting (79007).
radiotechnician wrote:
What part of the world was it found in ?

My friend found it right here in Texas, but I have no idea how it got here.

I did just have one idea. I recently got an insanely powerful LED flashlight. Tomorrow, I'll inspect the case with it, in the hope that it might show up traces of any lettering that has rubbed off.


Top
 Profile  
 
 Post subject: Re: Can anyone ID this meter, with shunts?
PostPosted: Dec Sun 10, 2017 6:51 am 
Member

Joined: Sep Thu 23, 2010 6:37 am
Posts: 9410
Location: Powell River BC Canada
Can you get a few closeup shots of the device in the lower left hand corner of MM4 ?
It might be an automatic cut out protecting the meter .

You might try posting the images here :

http://www.vintage-radio.com/index.html

_________________
de
VE7ASO VE7ZSO
Amateur Radio Literacy Club. May we help you read better.
Steve Dow
ve7aso@rac.ca


Top
 Profile  
 
Post New Topic Post Reply  [ 10 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: Ray P and 14 guests



Search for:
Jump to:  


















Privacy Policy :: Powered by phpBB