Search Only Images Visit Image Gallery FAQ page Visit Image Gallery FAQ imggal_sm2.png Magna-Rod & - device for locating underground water, sewer and electric lines. Download this image Image ID: SIL-SIL-038-02-01 Cite this: Magna-Rod. ca. 1953. Magna-rod, Beloit, WI. Supplied Caption: Magna-Rod & - device for locating underground water, sewer and electric lines. Tag(s): Products and Advertisements Topic(s): Technology Download: Image Copyright Not Evaluated Request copy of image How can I use this image?