First stage rainfall sampler.

摘要

A first stage rainfall sampler is described which is capable of automatically sampling a rainfall step by step by without requiring a motive power, easily to clean and handy. A plurality of sampling containers (15) are swingably and detachably hung down from the same one circumference of a tumbler (13), which is supported so as to be revolved within a vertical plane. at intervals so as to correspond to an outlet port (7) of a funnel (5) in turn and said tumbler (13) is provided with a weight (16) for variably forming a balanced condition between it and a rainfall sampled by said sampling containers (15). <IMAGE>