For the T-22 you could cut a piece of thin plexiglass and apply a thin plastic metric ruler.  I have seen cheap very thin white rulers. You may have to search around for one.  The scale will be 0-70 vs 0-50 but should look very similar.  Alternately you could print up the scale on your computer.

Dennis AE6C

On Fri, Oct 22, 2021 at 1:57 PM MARK DORNEY via ARC5 <arc5@mailman.qth.net> wrote:
Is it a US Navy ARC-5, or a USAAF BC type transmitter. Makes a difference. 

Mark D. 
WW2RDO

“In matters of style, float with the current. In matters of Principle, stand like a rock. “.   -   Thomas Jefferson 

Sent from my iPhone

On Oct 22, 2021, at 4:50 PM, Mike Bracey <mikebracey@att.net> wrote:


Does anyone know of a source of a reproduction or good used tuning indicator window for ARC transmitters? Mine kind of curled up and crawled away.
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