- #1
m82
- 1
- 0
Metal detectors for searching metals in the ground
How they work in one sentence explanation?
and second,
I've seen some frequency of about 8 kHz mentioned,could that be any possible health risk?
Please discuss, thanks.
How they work in one sentence explanation?
and second,
I've seen some frequency of about 8 kHz mentioned,could that be any possible health risk?
Please discuss, thanks.
Last edited: