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en.wikipedia.org/wiki/Pressure_measurement

Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure and display pressure in an integral unit are called pressure gauges or vacuum gauges. A manometer is a good example as it uses a column of liquid to both .... the liquid column (a vertical tube filled with mercury) manometer invented by ...

www.answers.com/Q/Who_invented_the_manometer

A manometer is a pressure gauge. A Crane Manometer might be one adapted to use on a crane, probably a steam crane, but could be hydraulic pressure on a ...

encyclopedia2.thefreedictionary.com/manometer

Looking for manometer? Find out information about manometer. : see pressure pressure, in mechanics, ratio of the force acting on a surface to the area of the ...

www.meritanswers.com/questions/inventor-of-the-sigma-manometer/19895-1-1

Mar 2, 2016 ... Name of the Inventor of Sigma Manometer is given in this section.

inventors.about.com/od/germaninventors/fl/Otto-von-Guericke.htm

Aug 16, 2016 ... In 1661, Guericke invented the manometer and the barometer. His barometer measured the ambient air pressure and he noted that it was ...

medinstrum.com/what-is-a-sphygmomanometer

Blood pressure sphygmomanometer (from the Greek 'sphygmos' – the pulse or beating of the heart, plus manometer – a tension or pressure measuring device) ...

www.google.com/patents/US2662409

4 Claims. The present invention relates to U-tube manometers, and more particularly to those that are used by engineers and servicemen in testing various kinds ...

www.britannica.com/technology/U-tube-manometer

(Left) A U-tube manometer, in which differential pressure is measured as the difference h between the high-pressure reading and the low-pressure reading, ...

www.conservapedia.com/Christiaan_Huygens

Jul 13, 2016 ... He invented a manometer to calculate the "elastic" force of gases in 1661. In 1678, he proposed that light was made up of waves, not particles.

engineering-references.sbainvent.com/fluid-mechanics/incline-tube-manometer.php

The incline tube manometer was developed to measure small pressure changes. The steeper the angle of the manometer, the more precise it is.