The DIS-300 is actually a Mastech MS6530. It's highly, highly unlikely that the DIS-300 has any modifications, certainly not with the LCD. It's also impossible that their claims are true... buried gold absolutely cannot be distinguished from anything else based on temperature.
The evidence overwhelmingly suggests that this company sells treasure hunting scams. The fact that they also sell dowsing rod devices pretty much cements that conclusion.
- Carl
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