[Boatanchors] Problem solved...probably. FW: Question for Weston 269 Meter

[Ron Barlow]

 If I understand correctly, a shunt is not missing, but perhaps one has been added.
 Be very careful, William, while performing the scale swap. The meter movement and/or the pointer can easily be damaged.
                       GL 73 & HNY de Ron  n4gjv 


________________________________
 From: Bry Carling <bcarling at cfl.rr.com>
To: William Morton <w_b_morton at hotmail.com>; boatanchor <boatanchors at puck.nether.net> 
Sent: Sunday, December 30, 2012 11:42 AM
Subject: Re: [Boatanchors] Problem solved...probably. FW: Question for Weston 269 Meter
 
Perhaps it's missing a shunt? 

William Morton <w_b_morton at hotmail.com> wrote:

>
>Hello All,
>I ended up buying a couple meters from that auction site and spent last
>night calibrating the first one that has already arrived.  While the
>information I found on the model 269 indicated 1 mA full scale, a rig
>set up with a 1.5v battery and linear pot gave me something on the
>order of 50 mA full scale.  Hmm... the meter moves smoothly and the
>scale on this particular meter is - surprise! - 50 mA.  Perhaps this
>particular meter was an earlier version or a modified example with a
>different sensitivity.  
>In any case, I am able to remove the outer cover and can see the scale
>plate is held by two screws.  Should be a simple matter of swapping out
>the scale plates and moving along with the project.  A learning
>experience, to be sure.
>Happy New Year to All!
>Best Regards,
>William
>From: w_b_morton at hotmail.com
>To: boatanchors at puck.nether.net
>Subject: Question for Weston 269 Meter
>Date: Mon, 24 Dec 2012 14:45:41 +0000
>
>
>
>
>
>Hello All,
>Season's Greetings from Minnesota, where it is currently snowing. 
>
>Today's question is about the beautiful Weston 269 meter.  Does anyone
>have any experience in changing/replacing the background scale?  I have
>a pair of meters, each with a DC volt scale ranging from 0 to 500. 
>Unfortunately each of them has been blown (I will spare you the sad
>details).
>I see several for sale on eBay but they are scaled for mA or dB so I
>would need to change them somehow.  Luckily I can take my blown meters
>apart for trial purposes but I would be grateful for some advice as to
>the proper method.
>Alternatively, if someone has a pair already scaled to 500 VDC and is
>willing to part with them I would be very interested in arranging a
>purchase.  
>Thank you very much in advance for your suggestions.  Happy Holidays!
>Best Regards,
>William                                                      
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>Boatanchors mailing list
>Boatanchors at puck.nether.net
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regards,
Bry Carling

-- 
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