The most typical type of steel detector is usually a hand-held steel detector or coil-dependent detectors applying oval-shaped disks with designed-in copper coils. The search coil functions as sensing probe and need to be moved about the ground to detect probable steel targets buried underground. لا تتحمل شركة المجموعة الأوروبية https://fidelw009lwi2.blgwiki.com/user