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Title: Orifice Meters
Author: J. S. Boynton
Source: 1964 Southwestern Gas Measurement Short Course (Now called ISHM)
Year Published: 1964
Abstract: The orifice meter as we know it today has evolved from an early beginning dating back to the reign of Julius Caesar. The Romans used a crude orifice to regulate and calculate the flow of water into homes and public buildings. Further developments in the principles of differential type meters occurred in the 18th and 19th centuries. In 1750 the pitot tube was developed by Henry Pitot. Investigations by Venturi in 1791 were put to practical use in 1887 by Clemens Herschel in the design of the Venturi tube for measuring flow commercially. The turn of the 20th century brought about very significant development in the use of an orifice as a measuring device. Major contributions were made in this area by T. R. Weymouth and H. C. Cooper from 1903 to 1910 and by Hicks in 1913.

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