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Vintage Honeywell

I ran across this awesome old pressure control with mercury switch recently.
Wondering the vintage?


  • bburd
    bburd Member Posts: 784
    That boiler is from the 1940s or so.

  • mattmia2
    mattmia2 Member Posts: 8,889
    The welded header is interesting, I kind of think that small arc welders weren't available to small shops until after wwii.