10K views · 41 reactions | Check out the Testo North America 510 digital manometer, compact and filled with troubleshooting features...And yes, it fits in your pocket. You can use promo code "knowitall" to receive an 8% discount at TruTech Tools, LTD Happy HVACing! https://www.trutechtools.com/search.asp?keyword=Testo+510 #hvacknowitall #hvac #testo #happyhvacing #trutechtools #hvactech #ambassador | HVAC Know It All | Facebook
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