I know this thread is a few months old, but you can also get a device called Ultra Gauge. I have an older version of both the SG and UG. They can both be calibrated. My Scan Gauge shows 1 page with 4 gauges, my Ultra Gauge can be set to display up to 3 separate pages with 6 gauges on each page. Ultra Gauge also costs less. I'm not sure about changes to the newer SG but I think the newer versions of the UG can display 4, 6, or 8 gauges per page and up to seven separate pages. That's up to 56 gauges which gives you lots of information about mileage and the way your car is operating.
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