The analog manometer, commonly referred to as a Magnehelic ®, is a test instrument that has been around the HVAC industry for decades. Among many technicians in the field, it is still the test ...

Benjamin Franklin was one of the most creative minds in American history. To aid him in his creative problem solving, he liked to use a piece of paper with two columns drawn on it. Franklin would ...

Jay Hendricks tells about ongoing work to change the realization and dissemination of the pascal, which will lead to the elimination of mercury-barometer pressure standards. Pressure is one of the ...

To present abbreviations and fundamental conversion factors commonly used in manometry; recommended definitions of pressure in terms of a column of mercury and water; and for a large number of liquids ...