Liquid level marker for container

作者: A. Eileen Suisman , Elwood Marple , William L. Burke

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摘要: A device is disclosed for visually sighting the level of a liquid material or solid particulate within container having sidewall. The comprises handle and first second leg, leg top end portion bottom with portion. portions are integrally connected to spaced apart accommodate thickness distance closer than portions. First legs resilient, enabling be separated upon positioning on external internal surfaces sidewall resiliency engaging maintain position relative container. foot attached respectively provide line operator determine

参考文章(4)
Bernadine S Moreland, Float type attachment for drink receptacle ,(1953)
Fleckenstein Jackson, Liquid-measuring apparatus ,(1925)
Bergeron Joseph, COMPUTING MEASURING VESSEL. ,(1910)