Basics September 12, 2015 ChrisK No comments

How Does Metal Detector Work?

Initially, metal detectors were invented by US President J. A. Garfield in 1881. He was shot by a bullet which entered in his body and went missing. Since then, they have been used by many people for various purposes. Today, they are used for security, industrial, and hobby purposes. How Does It Work? Metal detectors […]