[GreenKeys] Teleplex

[Bruce Phillips]

Hi,

I looks to me like a "Code Practice Oscillator", used for training, and 
practice of morse code. See: http://www.mtechnologies.com/wordpress/?p=77

There is an online museum of some different brand machines here: 
http://www.n4mw.com/cpomech.htm

Hope that is of some help.

Bruce



On 4/04/2017 5:47 PM, Vladimir Romanov wrote:
> Hello,
>
> Can someone tell me what is this?
>
> Thank you
>
> Vladimir
>
>
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