[Milsurplus] [Test-Equipment] Wanted: Parts Ecco ZM-3A/U

[WA5CAB at cs.com]

Groups,

I replaced my Sprague TO-6A with a ZM-3A/U Capacitor Analyzer.  The unit 
works fine (after a minor mod so that I don't have to hold the meter switch in the 
mA position for capacitor reforming).  Looks great, too.  The only problem is 
that when I put it in its operating position on the shelf over the work 
bench, I discovered that in several places on the dial drum, the shellac coating 
over the scales has bubbled and due to relative position of lighting and drum 
makes reading the scale difficult.  Hardly noticable unless you look for it with 
the unit sitting on the bench.  

I twice tried to buy another complete unit in similar or better cosmetic 
condition but lost out both times.  So I'm looking for a replacement drum that 
looks new, with smooth coating over-all.  I have a complete parts unit but the 
drum in it has other issues (several holes through the scale for unknown reasons 
and in general not as nice as the one I want to replace, other than that the 
shellac isn't bubbled).  As removing the drum doesn't look like a trivial 
excercise, I would buy a complete parts unit if necessary.  Or just the drum.  
Condition of the rest of the parts unit would not matter so long as the drum and 
scales were free of flaws.  

There was at least one other contractor who built ZM-3A's.  No way of telling 
whether their drums are identical to the Ecco ones, other than the hard way.

On a related subject, I'm also looking for the outer carrying case.  Don't 
know why but except for one belonging to another list member, all that I've seen 
or heard of recently are less transit case.  Which means there must be some 
floating around.  Case is gray, probably heavy, and has "Capacitor Analyzer 
ZM-3A/U" in black letters on the removable front cover.

73
Robert Downs - Houston
<http://www.wa5cab.com> (Web Store)
MVPA 9480
<wa5cab at cs.com> (Primary email)
<wa5cab at houston.rr.com> (Backup email)
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