Somewhere in my toolbox I have one of those "antennas" -- it's basically just that, a telescoping steel rod, likely the exact same thing as an old portable radi

Somewhere in my toolbox I have one of those "antennas" -- it's basically just that, a telescoping steel rod, likely the exact same thing as an old portable radio antenna, tipped with a magnet. Mine isn't a fancy neodymium magnet either, it's one of the old graphite-coloured ones. Its intended use is for fishing out dropped nuts and bolts when working in tight quarters.