[ARC5] Mystery unit

[WA5CAB at cs.com]

Nothing to do with bomb dropping.  It was used by weather prognosticators.  
In conjunction with a two page list of weather ballons, theodolites, etc. 
which I won't reporduce here.

Robert D

In a message dated 09/21/2012 19:42:37 PM Central Daylight Time, 
kgordon2006 at frontier.com writes: 
> In going through my stash today, I found a "Signal Corp Time Interval 
> Unit ML-138", MFPed 
> in 1944. Looks to be never used. Even has a tag wired to the mounting 
> frame.
> 
> Not sure what, exactly, it is, although from what little I can find on the 
> net about it, it includes 
> a tone generator.
> 
> It is beautifully built inside. All brass-geared clock mechanism in there 
> of some sort with a 
> winding key mounted in the lid. There are two main-springs and two places 
> to wind them up 
> with.
> 
> Would anyone here have a clue...or even several clues?
> 
> Ken Gordon W7EKB

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480