what is the maximum depth it will detect ?
840064
That depends on the size of the coil you will be using along with several other factors. The two coils used in an air test were the 6.5 x 9 and the 8.5 x 11 coil with the sensitivity set at 4 then at 6. A wheat cent was detected 6" and 8" away from the coil with the 6.5 x 9 coil. The same wheat cent was detected at 7" & 9" using the 8.5 x 11 coil. Using the 6.5 z 9 coil with the same sensitivity settings of 4 and 6, a 1964 US half dollar was detected at 7" and 8" respectively and using the 8.5 x 11 coil the wheat cent was located at 8" - 10" settings of 4 and 6. Google: "Garrett Ace 250 Coil Comparison Air Tests" for the complete results and there are several YouTube videos to explain this as well.
171438
I would say about a foot down. I never use it on the highest sensitivity because it picks up lots of metal fragments and there to deep to dig. Sometimes it beeps and there's nothing there when I dig, so whatever it is, its got to be pretty deep down. I would also recommend a hand metal detector to shift through the dirt, because it takes a while to separate the earth to find a coin or ring.
2168697
visual estimate from the one I have mounted: greater than 5 feet, most likely less than 6 feet.
1402812
it measures the hottest temp IMO it can detect. so it shouldn't matter how deep as long as you get to the area you want to measure
2106171
the manual indicates maximum depth is 200ft, but mine read close to 300ft once on a lake.
1904294
I think you would want something a little more sophisticated with a pancake tube. The Inspector or PRM 8000. This is a great little detector but you need something more sensitive and quicker. You would need to bucket some water then test it over a bit of time. Either of the units mentioned will measure over time.
1468786
It really depends on the size of the object, which is true for most detectors anyway however I have found dimes & pennies with this detector as far down as 10 Inches.
243808
depends on proximity. (the more ferrous mass the longer distance it will detect. less mass need to be closer)get detector as close to travel path as possible.
2022636
We hav only used it in the pool but am unaware of a depth limit? It takes excellent underwater video for sure! We love it!
1619339
The larger the object, the greater the detection distance, however dont go beyond 200 feet to limit errors. For smaller objects like a baseball or cricket ball, you should not go beyond 60 feet.
671191
Depth is determined by several factors. Size of target, metal conductivity, mineralization of the soil, and coil size. On this particular detector for example, a coin size object can could be detected at approx. 6 to 8 inches.
2238188
Yes it most certainly will...I am a fisherman and have used this to determin how deep a fish has taken a hook!
1028382
The specs from the 3M page state: http://solutions.3m.com/3MContentRetrievalAPI/BlobServlet?locale=en_US&lmd=1202748629000&assetId=1114305874053&assetType=MMM_Image&blobAttribute=ImageFile Max Depth Below Mounting Surface Inches (mm) 4.5" (114) I measured 4.75" Hope this helps.
1570942
In regards to the Norcross fish finder, it only reads depths of 100 ft, so I guess it would work if your closer to shore or in bays.
1516750
It will actually go about 3 feet on a coffee can in all-metal mode or a hub cap, this detector in all-metal mode goes deeper than any VLF that I tested it against, and with the correct dual coil the treasure hound it will go about 15 feet on larger targets no problem! I have owned mine for about 5 years and I have found quarters at 18 inches, this is a professional detector and will give you years of trouble free service!!!
1473879
It will depend on the length of the dock. I have one installed on a covered area behind my house. The sensor range to trigger the ultrasonic sounds and strobe light work well at 28 feet in my application. I am pleased with the results I have obtained in my application. The manufacturer will work with you to improve the application and settings if necessary. I recommend the product!
685109
Can set the unit to view a broad angle which limits its distance. Don't recall how far that detects. The beam setting can detect up to about 50' as I recall. I use the beam all around my property. To limit the distance I aim the beam at a tree trunk, wall, run the beam into the ground or other ways. You could aim it at a power box or shrub. Does a wonderful job. I tried many different detectors and this is the only one reliable and durable. Have had one receiver and 6 detectors for nearly 10 years mounted outside. Not a failure yet. Batteries last a year or more. I use the cheapest alkaline I can find.