disdrometer - Rain drop size distribution (DSD)

A disdrometer is an instrument that measures the size of rain drops. There are many different types of disdrometers. This disdrometer, which is developed by a small research company in Austria, is unique in that it records two, side view optical images of each raindrop. For this reason, it is called a 2D-Video-Disdrometer (or 2DVD for short).