The M-97 is an all-metal metal detector that can search through concrete and asphalt and was designed for finding buried or paved over valves, boxes, or manhole covers, or any other concealed metallic object. It also locates targets made of aluminum, brass and lead. Please remember, like all Valve and Box Locators, the M-97 is a Metal Detector which should not be used as a substitute for a Utility Line Tracer. New to the M series is the ease with which the M-97 can be stored. Just compact the lower stem, twist the search coil 90 degrees, and fold the search coil flat. The M-97 fits easily into the carrying case. In the Fisher tradition, the M-97 is affordable, tough, and simple to use while providing maximum performance.
When searching with the M-97, the meter gives a visual indication to any change occurring in the field of detection. This is primarily due to the coil passing over or near a metal object, but can occur when the ground mineral conditions change. There are two methods to tune and balance the M-97. One method is for quick and easy operation; the other will allow you fine tune the detector for deeper searching and greater sensitivity.