Metal Detectors
Metal detectors locate buried metallic items, such as historical relics and coins. There are two types of metal detectors - VLF (Very Low Frequency) and PI (Pulse Induction). VLF detectors create an electromagnetic field by sending and reversing an electrical current through a transmitter coil several times per second. The electromagnetic field activates the electrical flow of buried metallic objects. A receiver coil detects this and sends a reading to the user. PI detectors use only one coil to transmit and receive underground. electromagnetic signals. The PI detector sends electrical pulses of current through the coil in order to activate electric activity in buried metal.
Digging Tools
It is essential to use proper digging tools to unearth relics. Relic shovels are specialized digging devices designed to withstand and cut through rough terrain, such as roots and hard soil. Relic shovels often are made of steel. The shovels vary in length and blade design. For example, the Lesche Relic Hunder Model 38" is 38 inches long and has sharp teeth along one side of the blade for tearing through roots and soil.
Relic trowels are hand-held shovels and blades designed for finding smaller objects and digging for hard-to-get items. Some trowels come with non-metal blades to allow diggers to use metal detectors on individual scoops of dirt.
Accessories
Treasure diggers can search for targets in random spaces or in specific research areas, such as historical battlegrounds, ghost towns, burial grounds and ancient establishments. Some diggers even use old treasure maps while some use modern ones to find treasure. Helpful tools for navigation include a compass, magnifying glass, map measuring device, and an electric or non-electric barometric altimeter for measuring altitude.