

The compact design and the presence of internal batteries allow these instruments to be used to measure engine parameters in various vehicles. If preferred, by connecting the power supply directly to the vehicle, it is possible to use the instrument exclusively only in that environment.
In internal combustion engines (ICE) the air ratio -fuel is essential so that all the fuel can be used effectively. It is in fact the amount of oxygen present in the cylinder that determines how much fuel will be produced. burned, while that in excess will be eliminated through the discharge valve. By installing the supplied oxygen sensor (Lambda) in the discharge path, A/F RATIO METER will display It will instantly display the air-fuel ratio (ideally 14.7 for gasoline) and indicate if the fuel mixture is too rich (R) or too thin (L).
The equipment is resistant to a few drops of water, but it is not waterproof (therefore it is not recommended to put it under direct water jet).
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