iron box detector
 

i'm looking for a detector detects big size iron boxes ( Car battery size ) only ,not smaller size , long range , operation like two BOX , any patent or ebay adress acepted !

any patents or home made detector for big iron boxes working as two BOX , sees only big objects 30x20 and up !

nobody has an idea ?

There is only the king lrl who can help you 8)
You have several choices to make: gold,iron,void ........
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