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2. Hydrometer - Wikipedia

   en.wikipedia.org/wiki/Hydrometer

   A hydrometer or lactometer is an instrument used for measuring density or relative density of liquids based on the concept of buoyancy. They are typically calibrated and graduated with one or more scales such as specific gravity .

3. Fahrenheit hydrometer - Wikipedia

   en.wikipedia.org/wiki/Fahrenheit_hydrometer

   The Fahrenheit hydrometer is a device used to measure the density of a liquid. It was invented by Daniel Gabriel Fahrenheit (1686–1736), better known for his work in thermometry . The Nicholson hydrometer , after William Nicholson (1753-1815), is similar in design, but instead of a weighted bulb at the bottom there is a small container ...

4. Talk:Hydrometer - Wikipedia

   en.wikipedia.org/wiki/Talk:Hydrometer

   Another type of hydrometer is the electronic Oscillating Body hydrometer which determines the density of a small sample drawn into a glass tube mounted on an oscillating mechanism. The difference in frequency between the test sample and a reference sample of distilled water is a measure of the density of the sample, which is displayed digitally.

5. Baumé scale - Wikipedia

   en.wikipedia.org/wiki/Baumé_scale

   The Baumé scale is a pair of hydrometer scales developed by French pharmacist Antoine Baumé in 1768 to measure density of various liquids. The unit of the Baumé scale has been notated variously as degrees Baumé, B°, Bé° and simply Baumé (the accent is not always present). One scale measures the density of liquids heavier than water and ...

6. Hydroscope - Wikipedia

   en.wikipedia.org/wiki/Hydroscope

   A hydroscope is any of several instruments related to water: . One kind is an instrument for making observations below the surface of water, [1] such as a long tube fitted with various lenses arranged so that objects lying at the bottom can be reflected upon a screen on the deck of the ship that carries it.

7. Water metering - Wikipedia

   en.wikipedia.org/wiki/Water_metering

   For example, if one rotation of the hand is 10 gallons, the sweep hand is on 7, and the wheel display shows 123456 plus a fixed zero, the actual total usage would be 1,234,567 gallons. In the United States most utilities bill only to the nearest 100 or 1,000 gallons (10 to 100 ft 3 , 1 to 10 m 3 ), and often only read the leftmost 4 or 5 ...

8. Disdrometer - Wikipedia

   en.wikipedia.org/wiki/Disdrometer

   A disdrometer in place in the Everglades. A disdrometer is an instrument used to measure the drop size distribution and velocity of falling hydrometeors.Some disdrometers can distinguish between rain, graupel, and hail.

9. Salinometer - Wikipedia

   en.wikipedia.org/wiki/Salinometer

   A salinometer. A salinometer is a device designed to measure the salinity, or dissolved salt content, of a solution.. Since the salinity affects both the electrical conductivity and the specific gravity of a solution, a salinometer often consist of an ec meter or hydrometer and some means of converting those readings to a salinity reading.