Metal detector :  Tracker IV. 
 Bounty Hunter Tracker IV metal detector  Bounty Hunter Tracker 4 metal detector 

 - 1 metal detector in 2 pieces, 1 case, 1 instruction booklet :  metal, plastic, nylon ;  72 x 22 x 22 cm 
<br/><br/> Requires two 9-volt alkaline batteries (provided by the library).  Not for indoor use. 
<br/><br/> ”The Tracker IV is a user-friendly instrument, requiring only a minimum of operator skill, yet delivering effective performance over a wide range of conditions and applications. Streamlined in appearance, with only two operating knobs and a mode selection switch, the Tracker IV has eliminated the two most difficult aspects of metal detector operation, Tuning and Ground Balancing. Both of these functions are automatic with the Tracker IV. The Tracker IV will detect in extreme ground conditions, ranging from salt (for beach hunting) to black sand (for gold prospecting), with no operator adjustments to the circuitry and with no loss of sensitivity. From salt water beach conditions to black sand deposits common at gold prospecting locations, the Tracker IV sees through the earth’s naturally occurring minerals to find buried metals.” - provided by publisher 
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Library of things, outdoors.<br/>Metal detectors.