[humhum]

Originally Posted by brain

Is the information posted on this site correct? Can metal detection with ultrasonic sound? Can you help with this? link is below

http://en.shram.kiev.ua/goods/metal.shtml

Dear Friend , here is this two liks , I not build this two Sch , but I beliewe that will works its with correct calibration , for this need Time .

https://www.longrangelocators.com/fo...&postcount=102
https://www.longrangelocators.com/fo...ght=ultrasonic