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Re: Digital vs. Analog engine gauges
"why I don't see more digital engine gauges on the market. "
Because the analog guages are all pretty much just voltmeters and voltmeters are cheap. And in the aftermath of Three Mile island (really) a lot of research was done about guages and humans watching them.
A digital disaply requires a brain to process the numbers and some attention to them. An analog display just requires pattern recognition, which the mind does at a much lower faster level. i.e. "The needle should be THERE" and when the folks who install the guages do their job properly, all the needles will be pointing the same way when things are normal, so all your eye has to see is "Hey, that one's different" to spot a problem.
Really. That's why you'll oftne see race cars with the tach "twisted" to some odd position, so the needle is pointing "there" when everything is right, as opposed to always being oriented like a clock face.
Cheaper, more effective. And more waterproof too, I'd bet.