Various hydrometers. A hydrometer is an instrument used to measure the specific gravity (relative density) of liquids; that is,the ratio of the density of the liquid to the density of water | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Dotta, Alexandre |
Bildgröße: | 2024 px × 2268 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
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