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That's an old racers mod. Gauges are oriented to point straight up at a desired point, e.g., if temp of 185 is the target, then the gauge is rotated so that 185 is at 12 o'clock. Past 12:00 is cause for warning. With most of your guage needles pointing straight up or to left of 12, you know very quickly everything is OK at a glance on that long straight doing 140 mph.
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