Depth with AT Pro

[kaa]

What does it mean when you start to dig a hole for something, and then the detector says it is deeper in the ground than when you started? I'm using AT Pro, and today was at a beach, and it seemed to happen more in wet sand to about 2 inch deep water, but I also didn't go into any deeper water than that.

 

[cudamark]

Three possibilities ...Most metals will dissolve slightly in the ground causing a halo effect around the object. The detector will pick up the upper limits of that halo and figure that is the target's depth. Once you dig out the ground covering the target, the halo goes with it and the depth reading now will be the actual target.....not the halo. You could also be getting a reading off an adjacent target that gives your machine a false reading. It could also be that you're not pin pointing accurately.

 

[Jeremy S]

Large deep iron objects can overload the detector, and may only show up as an inch or two on the depth scale when they are really a foot or more down. I can almost always tell whether something is a coin/small object or a large object like a can/etc just by using the pinpoint function.

Never use one in salt water though.