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Aug 23, 2018 at 16:07 comment added David Richerby If they're of similar quality. But a high-quality old pump could well be more accurate than a cheap new gauge.
Aug 23, 2018 at 16:05 comment added Argenti Apparatus @DavidRicherby old pump gauge is more likely to be inaccurate than new hand held gauge.
Aug 23, 2018 at 15:57 comment added David Richerby Except you don't know if it's the pump or the gauge that's giving the wrong reading.
Aug 23, 2018 at 15:38 history answered Argenti Apparatus CC BY-SA 4.0