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Old 09-19-2013, 05:59 PM   #2 (permalink)
gone-ot walking...
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Beyond physical "leakage" the quality of a vacuum gauge is mute...because, in the end, you're actually only using the "relative" needle position, not the actual "numbers" to drive by. The further 'over' the needle, the higher the vacuum...regardless of the actual numerical value.

Ask any aircraft pilot and they'll tell you that they "scan" all their instrument panel gauges by "position" more than by the numbers they're actually displaying.

Last edited by gone-ot; 09-19-2013 at 08:25 PM..
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