Gill's ultrasonic wind gauge is the latest development for wind speed measurements in the Track and Field world. Used exclusively for wind measurement at the 2004 US Olympic Trials. Proven to work and designed to interface smoothly, the E730U wind gauge is the choice for Lynx Timing Systems. IAAF states that ultrasonic wind gauges shall be used in all International Competitions under Rule 1.1 (a) through (f). Includes tripod, AC adapter and padded case.