There are a whole bunch of problems with this:

• most of the sensors are digital
• the guages are getting their signals from the ECU computer, which is a digital signal
• the guages in your car are not $10000 scientific equipment, they’re not that precise.
• the design of these analog guages means that most precision would be lost just due to human vision.

There are good arguments for analog guages in cars, but precision isn’t one.