I used one to detect a staple that the docs accidentally left in after surgery. Eventually, I'll have it removed, unless it works it's way out. ;)
/johnny
I’ve used detectors since the late 1960’s when I bought a cheap Mustang Detector that had no discrimination. Bought my first Whites Detector in 1987, and now have 4.
I used them for ‘Ghost Towning’ here in Michigan. I looked for places where the first settlers built their homes and farms. Usually an old stone cellar or stone foundation is all that remains.
I’ve found a lot of rusty nails and junk, but I’ve found a lot of rare and historical relics and coins too. From silver and copper coins from the early to late 1800’s, a cap and ball boot pistol, an octagon barrel from an early plains rifle in a lake, a mid 1800’s powder measure that still works, to a Civil War soldier’s US belt plate, and a Civil War Artillery coat button, to many early hand forged ax heads and assorted hand forged tools. Research, perseverance, and sweat pays off. A whole lot of walking and hiking to get to those often out of the way places, which is good exercise.