측우기(測雨器, cheugugi) - Korean traditional Rainfall meter

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[parts list] 1. cheugudae.stl x1 2. cheugugi1.stl x1 3. cheugugi2.stl x1 4. cheugugi3.stl x1 Invented around 1440, this tool was used as the official precipitation gauge of the Joseon Dynasty from 1442 to the beginning of modern weather observation in early 20th century. It collected rainwater in a metal cylindrical container and measured its depth with a standard ruler. The same equipment was installed at Seoul's astronomical observatory and local offices nationwide, establishing a system for precipitation observation and reporting throughout the country.