Autometer makes MANY MANY different gauge types, including
digital and "sweep" type (in several different background types as
well as font & colors
CYBERDYNE makes digital gauges.
NEXUS Gauges (from autometer) is an interesting solutions that uses
software & a digital network to change "dial" types and functions on the
fly (one time the same "gauge" might be a voltmeter, push a few buttons
on an IR/Wireless remote and the same gauge becomes something
completely different...maybe an EGT or Boost etc...)