• An incorrect gasoline savings amount was calculated in the "Think Again" editorial, "Money in the right places," Control Engineering , July '05, p. 30. Mark Hoske, editor-in-chief, reports that the 15-mpg difference between the most fuel-efficient (40 mpg) and least-efficient (25 mpg) vehicles he has owned would actually have produced only $5,805 in savings, assuming he paid $2.15 a gallon for gas and drove 18,000 per year for 10 years.

  • A type of flowmeter was incorrectly identified using a brand name on the second-to-the-bottom bar of the chart, "Types of Flowmters in Use—2005 vs. 2004," in the "Product Research" article, "Measuring Process Fluid Flow: an Exacting Task," Control Engineering , June '05, p.59. The graphic should have listed the type of flowmeter as "averaging pitot tube."

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