Hi Bill:

I looks like an Omnigraph disk.
https://prc68.com/I/Omnigraph.shtml
-- 
Have Fun,

Brooke Clarke, N6GCE
https://www.PRC68.com
axioms:
1. The extent to which you can fix or improve something will be limited by how well you understand how it works.
2. Everybody, with no exceptions, holds false beliefs.
-------- Original Message --------
Can't tell the size from the images but it looks similar to the one in the "Gibson Girl" transmitters.
 
73 - BILL KA8VIT
 
 
====================================
Bill Chaikin, KA8VIT
Chief Radio Operator
WW2 Submarine USS COD SS-224 (NECO)
USS COD Amateur Radio Club - W8COD
 
[email protected]
http://ka8vit.com
http://www.usscod.org
====================================
 
On 08/23/2024 10:06 PM EDT Mark K3MSB <[email protected]> wrote:
 
 
Might any of you know in what device this was used?
 
image.png

image.png

73 Mark K3MSB
 
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