Garrett AT Pro Review (Pinpoint A Target Using ACE 250 350). How do you pinpoint a target that is underground using this particular product and model?
- Test it out first to get your bearings on how the machine detects metallic objects.
- Place a metal object a few inches under soil and mark that spot with a button of sorts (which is non-metallic, by the way).
- Turn on the Garrett Ace 250 and sweep it over that small area, just a quick left-right to-and-fro motion will do.
- Pinpointing is what this idea is all about, not merely knowing that there is a coin or metal object under there.
A continuous humming sound varies in pitch as you move over the area. Even a few inches away, you will see it become a tinny sound or remain silent. The ovular design of the detector head will beep when the object is anywhere inside its boundary. How do you pinpoint the exact spot and dig a neat hole to make a discovery or extraction?
- Keep performing the back and forth motion until you hears the highest possible signal (hum or beep). That is the spot to mark. Previously, since this is a test, your button will mark that spot, where the metal object or coin is buried. Compare and see if you are doing it right.
- The center of the coil (or detector head) will show the highest signal point based on object depth. If the metal object is closer to the surface, say, one inch under, the periphery of the coil will beep or hum. If it is three to four inches under, the sound will be highest nearest the center of the detector head (coil).
- While this idea seems simple, wider areas will influence accuracy. This being a test and occupying a very small area, namely a few inches by few inches, you can get away with a quick find. If objects are buried a little deeper and are spread out, a discipline will be needed to help you excavate.
- The pinpoint button on the Garrett Ace 250 has to be pushed as you sweep the coil over an area. If you happen to lose the signal, which is quite the reality we can assure you, simply repeat the process and find it again.
- It is a matter of eye-ear-hand coordination. From wider sweeps, you are practically narrowing the coil’s movement with the pinpoint button being pushed until you hear the highest possible sound.
If you are performing a general search and come across different metal hot spots, see where the coil beeps, judge depth on average, get a plastic lid of that measure (a 3 inch diameter lid for a potential 3 inch depth; which will beep nearer the center of the coil), and place it on the spot. This will make things much easier for you (this is the discipline mentioned earlier).