Tony Carden is the technical/marketing writer and videographer at Tuthill Corporation’s Fill-Rite/Sotera facilities in Fort Wayne, Ind. He can be reached at acarden@tuthill.com, or 260-755-7522. Fill-Rite and Sotera Systems manufacture fuel and chemical transfer pumps, as well as a complete line of metering products. For more information on Tuthill Corporation and its products visit www.tuthill.com. For more information on Fill-Rite and Sotera products, visit www.fillrite.com or www.sotera.com. The author would like to give special thanks to the engineers at Tuthill for their assistance.