Summary of Contents for National Geographic 80-20010
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80 - 2 001 0 U N D E RWATE R M E TAL D ETECTO R IN ST RUC T I O N M A N UA L NOT INCLUDED WARNING: WARNING: CHOKING HAZARD — Small parts. Do not mix old and new batteries. Do not mix alkaline, This product can expose you to chemicals including lead, standard (carbon-zinc), or rechargeable (ni-cad, ni-mh, etc.) batteries.
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Customer Service: Call 1-866-252-3811 READ AND FOLLOW THE INSTRUCTIONS BEFORE USE. IMPORTANT SAFETY INSTRUCTIONS KEEP THESE INSTRUCTIONS FOR LATER USE. • CHOKING HAZARD: CHILDREN SHOULD ONLY USE DEVICE UNDER ADULT SUPERVISION. KEEP PACKAGING MATERIALS LIKE PLASTIC BAGS AND RUBBER BANDS OUT OF THE REACH OF CHILDREN AS THESE MATERIALS POSE A CHOKING HAZARD.
Battery Installation: To open the battery compartment, rotate the battery cover counter-clockwise. Insert a 9-volt battery in the compartment making sure to keep the proper polarities (+/-) aligned. Then turn the battery cover clockwise until hand tight to assure a water-tight seal.
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Operating Instructions: Turn on the detector: Hold unit with the search coil up for about three seconds. Light will flash four times first and the other two flashes will occur simultaneously with short pulses of vibration and a steady dim light indicate unit is on.
Detecting a Target: After turning on the detector, hold it with coil down to start detection. When target is located, the detector indicates with vibration and bright light. These pulses increase in quantity as the closer the search coil is to a detected target. The quantity of pulses is proportional to the target size and distance.
Places to search: • The beach, which is a great place to begin because you will get fewer competing signals on a sandy beach and it will be easier to dig there; • Rivers, streams, or any large body of water; •...
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Metal detector milestones: Metal detectors are a common treasure hunting tool because of their ability to pinpoint and identify a variety of precious metals. However, the inventor of the first metal detector — Gustave Trouvé — had a more altruistic goal in mind for designing such a device.
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How metal detectors work: Electromagnetism is the scientific principle at work in a metal detector. The standard handheld metal detector used by hobbyists and treasure hunters has two coils — a transmitter coil and a receiver coil. When the detector is turned on, an electric current moves through the outer transmitter coil generating an electromagnetic field (blue line), which pushes out from the bottom of the device toward the ground.