On Wed, 22 May 2019 20:55:03 -0500, Fox's Mercantile
wrote:

On 5/22/19 8:39 PM, John-Del wrote:
On Wednesday, May 22, 2019 at 9:16:45 PM UTC-4, wrote:
This website discusses it, but never really identifies the part. This is
the meter I am working on and I too wondered what the SA1 and SA2 parts
are. I never saw that symbol.

https://www.antiqueradios.com/forums...c.php?t=117824

Schematic on the webpage.



Wild guess: spark gaps for protection.


Despite posting the forum link where they are identified as Surge
Arresters, Tube Guy posted the "what are they?" question over here.

No one on that forum CLEARLY said what they are. Just guesses.....
Guesses are not real answers.....