Tube Pressure Gauge
In 1849 the Bourdon tube pressure
gauge was patented in France by Eugene Bourdon. It is still one
of the most widely used instruments for measuring the pressure of liquids
and gases of all kinds, including steam, water, and air up to pressures
of 100,000 pounds per square inch. Eugene Bourdon founded the Bourdon
Sedeme Company to manufacture his invention.
The American patent rights to Eugene
Bourdon's gauge were bought by Edward Ashcroft in 1852. Ashcroft played
an important role in the widespread adoption of steam power in this country.
He renamed Bourdon's gauge, the Ashcroft gauge.
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