Other names for the position transducer technology are string pot, yo-yo pot, draw wire, or cable extension. The position transducer devices are available in analog or digital. They are used to control and measure linear position and velocity, using a flexible cable and spring-loaded spool. With relatively non-critical alignment requirements, compact size, and ease of installation, position transducer devices are the linear measurement system of choice in applications as diverse as bone densitometers in the medical industry, crash testing in the automobile industry, pump jacks in crude oil extraction and irrigation and flood control in water management. For more information on our precision sensor products, see the display on our company website at www.unimeasure.com.