The Instrumentation, Systems and Automation Society has released another book in its The Consumer Guide to . . . series—a set of books that provide detailed and unbiased guides to the most commonly used instruments throughout the world. The seventh guide in the series, The Consumer Guide to Non-Contact Level Gauges, by David W. Spitzer and Walt Boyes, provides insights into the advantages and disadvantages of non-contact level gauge technologies (ultrasonic, laser and radar). Information: www.spitzerandboyes.com