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I have the Accu-gage with rubber outer and one branded Porsche that was a gift. Both are within 1psi which is plenty good enough for my uses. I do keep a pencil gauge in every car and they are better than no gauge but might vary 3-5 psi from my dial gauges.
I do prefer analog because digital require a stupid button battery that always seems to die when I need it most. My micrometer is digital and I HATE that battery.
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2021 Cayman GTS 4.0L
2020 Macan (dog hauler)
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