Anybody who wants to learn about iron masking there are some videos at the Garrett website. The AT Pro and AT Gold have hi-resolution iron discrimination. Even the Ace 350 has expanded range iron discrimination.
"The difference between genius and stupidity is that genius has its limits." ~~A. Einstein
May you never take one single breath for granted.
Don't let some Hell-bent heart leave you bitter.
If it has a control box on a swivel handle, don't walk away, RUN!