The MD200, manufactured by Trotech®, is a magnetometer suited for covered ferromagnetic metals locator such as valve caps and rods, hydrants, metallic manhole and tank covers, and the like. It is designed for environments like in the blazing heat, bitter cold, under water or in the snow to supply a location results that is accurate. It comes with a benefit of a covered ferromagnetic metal with a speedy detection and a reliability that prevents the detection of all non-magnetic metal objects due to its high sensitivity, and with an auto-manual adjustment that can function for 24 hours. Furthermore, a backlit display can be read easily along with a rotation function. It is designed to minimize discomfort and lightweight of only 830 g.