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The Twaddell scale is a hydrometer scale used for measuring the specific gravity of liquids relative to water. On this scale, a specific gravity of 1.000 is reported as 0, and a specific gravity of 2.000 is reported as 200. [1]
The hydrometer sinks deeper in low-density liquids such as kerosene, gasoline, and alcohol, and less deep in high-density liquids such as brine, milk, and acids. It is usual for hydrometers to be used with dense liquids to have the mark 1.000 (for water) near the top of the stem, and those for use with lighter liquids to have 1.000 near the bottom.
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 ...
The Charles C. Trowbridge House is located at 1380 East Jefferson Avenue in Detroit, Michigan. It is the oldest documented building in the city of Detroit; [ 3 ] it was designated a Michigan State Historic Site in 1974 [ 2 ] and listed on the National Register of Historic Places in 1976.
The first Detroit House of Correction opened in 1861 near Detroit's Eastern Market. [1] In 1919, the city of Detroit purchased approximately 1,000 acres (400 ha) in Plymouth Township and Northville Township for approximately US$30 (equivalent to $544.09 in 2024) an acre to house a new Detroit House of Correction. A prison camp, with inmates ...
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 ...
The Quincy Mine No. 2 Shaft Hoist House is an industrial building located north of Hancock, Michigan along US Highway 41 within the Quincy Mining Company Historic District. The Hoist House contains the largest steam hoisting engine in the world, [ 3 ] which sits on the largest reinforced concrete engine foundation ever poured. [ 3 ]
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.