This is true. I use my magnehelic for every boiler install. I can see the varations in draft a lot better than the digital readout on my combustion analyzer. They're bullet...
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Veto makes a great bag and the warranty is awesome. I would look into it if I wasn't saving my pennies for a Testo 327 combustion analyzer:yes:
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Yeah, mine is almost 10 years old. Really solid instrument:thumbsup:
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