Tachometer
The tachometer shows the engine speed in thousands of revolutions per minute.

Do not operate the engine with the pointer of the tachometer in the red zone. This may cause severe damage to the engine.
See also:
Acc
In this position the electrical accessories (audio, accessory power outlet, etc.) can be used. ...
Maintenance precautions
When maintenance and service are required, it is recommended that all work be
done by an authorized SUBARU dealer.
If you perform maintenance and service by yourself, you should familiarize yoursel ...
Key lock-in prevention function
This function prevents the doors from being locked with the key still in the
ignition switch. ...
