Many techniques have been developed for the measurement of pressure and
vacuum. Instruments used to measure pressure are called pressure gauges or
vacuum gauges. A
In 1661, Guericke
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In 1643 Torricelli
Nov 20, 2007
The simplest device for measuring static pressures up to about 90 pounds per
square inch (62 newtons per square cm) is a U-tube
FIGURE 10.2 Mercury barometer
Mar 2, 2016
Otto von Guericke Otto von Guericke ... the most common type of
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In addition to optical aids, Huygens also invented a micrometer in 1658 ...