A High Precision $3.50 Open Source 3D Printed Rain Gauge Calibrator

Jose Manuel Lopez Alcala, Oregon State University, Electrical Eningeering, Corvallis, OR, United States, Chet Udell, Oregon State University, Biological & Ecological Engineering, Corvallis, OR, United States and John S Selker, Oregon State University, Biological and Ecological Engineering, Corvallis, OR, United States