Apparatus and methods for surveying with a hydrant monument
作者： Darrell G. B. Cline
DOI:
关键词: Mining engineering 、 Forensic engineering 、 Cover (telecommunications) 、 Engineering
摘要: An apparatus is disclosed to secure survey equipment a top portion of hydrant monument. The comprises support plate having an upper surface and lower surface. adapted be securely mounted the cover also attachment device proximate plate.
lens.org 参考文章(1)
Earl Robert Lockhart, Snow marker for fire hydrants and other utilities ,(2008)