2 tone ferrous will call most all nails iron for you....Sometimes a new user has to use TTF until they can hear the different sounds in multi tone conduct.....Well I'll be the first to admit, I completely forgot about turning 90 degrees to check... It's been a couple years since I detected. Any way I will reincorporate that back into my swing
Sounds are great to learn and a lot of people hunt by sound...but a new user is sometimes overwhelmed by all the multi tones coming at them from the eTrac.