The Viking WASP is a TR detector with two controls, on/off with fine tuning and the other offering coarse tuning, able to pick up most metals. This detector is ideal for use in detecting manhole covers and stopcock boxes, which have been covered by earth or tarmac. Other objects could be; steel reinforcement rods in concrete road surfaces, metal pipes, valve heads or buried fuel tanks. The Viking Wasp is a favourite with the Water industry when searching for hidden manhole covers.