any visual Target ID display is not needed.
"WHY DOES ANYONE NEED OR RELY ON A METER FOR IN THE FIRST PLACE."... They should never "RELY" on it to tell them exactly what a target might be. While visual TID isn't really a "NEED" it can certainly be a "WANT" for the casual coin hunter.
"WHEN PROSPECTING,NO USE FOR A METER"... Yep, quite correct. No need for discrimination when you're looking for those tiny gold nuggets.
"WATER HUNTING,NO USE FOR A METER"... Yep, you got it right again. No use for any discrimination when the highly desired gold jewelry is sought, or when many coins and other targets are often located beyond the depth of any accurate TID.
"RELIC HUNTING,NO USE FOR A METER"[... For the third time in a row you've correctly selected an application where an avid searcher of "relics" has no nee for discrimination, or perhaps only enough discrimination to deal with scattered iron nails.
"SO YOU GO OUT AND BUY A $700 MACHINE TO LOOK FOR COINS AND LOOK AT A METER TO SEE IF IT IS A PENNY."... TID (Target ID) is simply a suggested reference to a particular item, and most know that it is only functional to a limited amount of the overall detection depth.
Personally, I prefer the term used by White's Electronics, which is VDI. VDI stands for Visual Discrimination Indicator and provided, usually, more information than just a suggestion as to a possible coin type. The most important word in 'VDI' is DISCRIMINATION.
TID/VDI is simply a separate way that discrimination information is conveyed to use. As such, I use TID/VDI readings as a tool to confirm an audio response as being something that I would prefer to ignore/reject/discriminate.
I do NOT use TID/VDI info to confirm a 'guess' as to a located target's potential, but rather to help me make the Dig/No-Dig decision. Remember, these high-dollar detector models were made for about 75%-90% of the detector users who are strictly coin shooters or most often chasing coins. Searching all the everyday-use-sites that are also littered with everyday-trash.
Digger's been using a reference of late alluding to the encouragement to dig most targets for success. This falls right in line with the term I have preached for over 2