How Deep on a Mason Jar Lid?

[DiggerLee]

Using a CZ-3D with a 10 1/2 inch standard coil, properly ground balanced on maximum sensitivity, in all-metal mode, how deep do you think the top of a mason jar can be detected? I believe the lid and the screw-on ring that would be quite a bit of metal. Thanks. Lee

 

[Cool Hand Fluke]

I use a similar machine, it's a Fisher CZ6. Two years ago I dug a 1906 San Francisco licence (2"X 4") plate at 11 inches (check Western & Eastern Treasures Mag. Jan. 2009). I was using the standard 8 inch coil.

I've air tested the 10 inch coil and I typically get 2 more inches of depth. My guess is that a mason jar will probably detect at about 12 or 13 inches with a 10 inch coil.

 

[gleaner1]

20" or a lot more probably. On mild beaches, CZ20, max sense in all metal with 8" coil, I have found pull tabs at 12". Just dig a hole and try it.

 

[Dug D]

Hi Digger, I have dug two of them in my backyard 10 and 14 inches with strong signals. A silver umax and an x 50. Both were whole with white glass centers. Halfway down on the 14 inch dig I retested and lost signal when I raised coil about 2-3 inches with the x 50, I would be surprised to get more than 18 inches with most detectors unless a jar was filled with coins.

 

[mattw]

I have pulled them at 15" or so with a DfX, really dislike the darn things. But, you gotta dig them incase there is a jar with stuff at the bottom.

Matt

 

[Frankn]

I live on a farm in Maryland and have dug about 20 mason jar lids. The ones I find here are the older Zinc plated lids with the white milk glass lining. Most are about at the 6" dept. I have comprable size and material items at 20+" so I would estimate that they were from the 30's. I have found a brass plated style lid on a jar at 12" which sang out loudely, probably because of the 12 silver dollars inside! I still have the 12 silver dollars! I use a XLT.

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[vaquero44]

well i tried this on my fisher 1270 air testing with the 10.5" in all metal sens cranked and got 30" no bull