Korea's rain gauges are 198 years older than Europe's. King Sejong set up a network of identical gauges in 1441, while Europe's first was made by Benedetto Castelli only in 1639.

1441 · 1639 · apart: 198 years

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The event

• Korean rain gauge1441 · Seoul. In 1441 King Sejong had an iron rain gauge cast, and a year later identical vessels were placed in every province to plan taxes and rice planting. It was the world's first network of standard rain gauges.

15th century · 17th century

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