what is a gauss line
Gauss Lines. The 5, 10 and 200 Gauss lines are marked on the floor of each magnet room. These Gauss lines serve as a reminder that you are inside a magnetic field which increases sharply as you move closer to the magnet.The 5 Gauss line (the outermost line) defines the limit beyond which ferromagnetic objects are strictly prohibited. 1  Home.2  How To.hese Gauss lines serve as a reminder that you are inside a magnetic field which increases sharply as you move closer to the magnet. The 5 Gauss line (the outermost line) defines the limit beyond which ferromagnetic objects are strictly prohibited. 1  Home. 2  How To.