| The development of hydrometers and thermometers changed brewing by allowing the brewer more control of the process, and greater knowledge of the results. |
| Sufficiently accurate and quick determinations of density may be obtained by the floating hydrometers, which allow the density of a liquid to be deduced from the depth of immersion by reading a graduated scale. |
| Alcoholometers and hydrometers for alcohol and alcoholometric tables? |
| This revolutionized density measurement and began to replace hydrometers and pycnometers. |
| Hydrometers can be used to investigate the densities of a variety of liquids. |
| Long before the oscillating U-tube density meter was invented, people determined the density of liquids and gases using pycnometers and hydrometers. |
