Universal rain gauge

From Glossary of Meteorology

universal rain gauge

A weighing rain gauge in which the weight of the catch is converted to centimeters or inches of precipitation and recorded by pen on a clock-driven chart.

The clock cylinder usually rotates one revolution in 24 hours.

NOAA/National Weather Service 1972. National Weather Service Observing Handbook No. 2, Substation Observations. NOAA, US GPO..