Trailer for Taking Measurements (image) NASA/Goddard Space Flight Center Share Print E-Mail Caption The trailer is used to mount instruments to measure rain and snow above accumulating snow pack. The instruments on the trailer operate unmanned throughout the winter season. Credit Credits: University of Washington Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.