page_title: Carl Georg Barth
section_title: Career
hierarchical_section_title: Carl Georg Barth / Biography / Career
caption_attribution_description: English: Slide rule created by Carl G. Barth, a coworker of Frederick W. Taylor, for turning work, about 1904 Deutsch: Rechenschieber für Dreharbeiten entwickelt von Frederick W. Taylors Mitarbeiter, dem Mathematiker Carl G. Barth um 1904
context_page_description: Carl Georg Lange Barth was a Norwegian-American mathematician, mechanical and consulting engineer, and lecturer at Harvard University. Barth is known as one of the foreman of scientific management, who improved and popularized the industrial use of compound slide rules.
context_section_description: In 1899, efficiency expert Frederick W. Taylor hired Barth  to work with him at Bethlehem Steel Company. Carl Barth helped to develop speed-and-feed-calculating slide rules.
  In 1902, Taylor and Barth went to work for William Sellers at the machine tool firm of William Sellers & Company of Philadelphia. An account of their application of slide rules was published in the Transactions of the American Society of Mechanical Engineers in 1904.
  Barth started in 1905 on his independent career as consulting engineer. Barth became an early consultant on scientific management and later taught at Harvard University.  Barth edited articles submitted to International Correspondence School of Scranton, Pennsylvania publication, the Home Study Magazine. In  1909, he undertook the installation of scientific management in the Watertown Arsenal at Watertown, Massachusetts.
  Barth was a leftist and anticapitalist.
caption: One of Carl G. Barth's speed-and-feed slide rules
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