Archimedes Eureka! He may shout. if only he could see this amazing precipitation meter. Eureka! shouted Archimedes as he leapt out of the bathroom and ran naked through the streets of Syracuse, Sicily. Apparently, he was very excited about discovering how the whole buoyancy thing works. Unfortunately, the legend is probably not true, but its famous principle is true. This copper gauge lets you see it in action whenever it rains. Archimedes' Principle & mdash; this states that the upward buoyant force exerted on anything immersed in a liquid is equal to the weight of the liquid it displaces; This is why boats float. This is why the tube in this rain gauge rises when its bottom fills with water. Known as a pluviometer for the science types (you know, those who love to hear all those Archimedes things when you show them your awesome new gadget), it's available in a patio-ready desktop version or in a garden stake. OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.