arduino thermal anemometer
You can use a differential amplifier with the negative input V1 connected to a fixed voltage (12V or 5V) and V2 connected to the output of the circuit.

For this to work you need an opamp that can go rail-to-rail (not a 741).

If I were you I'd stick with the voltage divider, though, unless there's a definite need for the extra bit of precision.