When it comes to mechanical equipment collecting some kind of input from the environment, the method of their display of output also becomes very important. The quality, the material as well as the accuracy of output generated by metal detectors can predict their value to the users because sufficient information is provided in an understandable format becomes the key of the effectiveness of the equipment in question. Following are the available methods of display of gold detectors which can be found from beginner to professional level equipment and what exactly they can tell. 

Analog Gold Detectors

The most backward kind of option in some of the lighter variants and older models of gold detectors available include an analog display. It shares the least amount of information regarding the detection and is the least effective among all types. Basically, a needle is present in the middle of the lowest end of the scale. The scale may have divisions in numeric form or basic high low, where low determines the signals from far away or smaller objects whereas high or larger number characterizes strong signal from a relatively closer location or larger object. The needle deflects according to the magnetic field received by the recipient coil, if strong then towards the stronger pole and if less then towards the weakest pole of the circular or semi-circular scale.

Digital Gold Detectors

These are relatively modern display system having an LED (Light Emitting Diode) display where the system assigns numbers to certain metallic components to make sure it can clearly distinguish between ferrous and non-ferrous compounds. The numbers assigned to each group can be different and is usually in ranges as well where a certain range would determine the purest form of gold, whereas on the opposite end, the range would determine the pure iron or ferrous alloys. These digital displays are more practical as compared to analog and are seen very frequently in intermediate, advanced and deep seeking gold detectors. 

3D Graphical Gold Detectors

The most advanced form of display in gold detectors is when the display comprised of an LED backlit technology and the screen is able to show colorful graphs and can summarize the shape and size of the prospective object found or detected underground just by scanning it from the top. This output method used a different color to classify different type of metal and once again the colors can vary from model to model.