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Hydrometer vs Densitometer - What's the difference?

hydrometer | densitometer |

As nouns the difference between hydrometer and densitometer

is that hydrometer is an instrument that floats in a liquid and measures its specific gravity on a scale while densitometer is a device that measures the optical density of a material.

hydrometer

English

(wikipedia hydrometer)

Alternative forms

* hydrometre (nonstandard)

Noun

(en noun)
  • An instrument that floats in a liquid and measures its specific gravity on a scale.

    • Derived terms

    * thermohydrometer

    densitometer

    English

    Noun

    (en noun) (wikipedia densitometer)
  • A device that measures the optical density of a material.
  • A device that measures the specific gravity of a substance; a densimeter.

    • Related terms

    * densitometric * densitometry