gauge VS instrument
What`s the difference between gauge and instrument?

For example, a petrol gauge.
Can I also say “a petrol instrument”?

Question

gauge VS instrument
What`s the difference between gauge and instrument?

For example, a petrol gauge.
Can I also say “a petrol instrument”?

Answer

A petrol gauge is a device which measures and indicates the amount of petrol in a tank. In everyday language, a petrol gauge is a measuring instrument, not a petrol instrument. 'Petrol instrument' may be used as a technical term in engineering (I've googled it and seen it on some sites), but for the average person, the phrase is meaningless. I would stick to 'gauge', if I were you - at least it is clear to everyone what this means.

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