Metal Detectors Super Store

Discovery’s Boat towed Fish comes with a 100 foot cable and includes a built-in strain relief. Also included are 2 detachable stabilizer fins that can be easily replaced if damaged.

Discovery Fish is rated to
a depth of 100 feet. It uses a simple built in system for world wide tuning using a look up table to set a ten position micro switch. It also has a RS232 and RS485 output that could be used with DGPS logging.

"Treasure hunters will love how easy the Proton Magnetometers are to use. You can quickly locate and pinpoint any buried iron treasure - in either fresh or salt water.

Our magnetometer offers the most depth in any type of soil on all iron targets. Yet the operation of the Discovery is simple and requires minimal training in the field.

Many treasure hunters use magnetometers to locate iron strongboxes full of gold or silver coins, to find iron cannons, cannon balls, or guns from the Civil War era. Locate iron ships, treasure site with iron wreckage or debris fields that in many cases will often hold other valuable metals like silver and gold.

The Discovery finds iron items that both tell a story and lead you to other treasures - it will find wagon wheels that tell the story of migration and surround old settlements, iron bans from old wooden treasure chests that hid family fortunes, and projectiles that indicate ships or wreckage or battle sites.

Discovery Boat towed magnetometer has a loud built-in dual speaker system that will alert the operator when the target is approaching.

3 All New features have been added for all 2008 models:

New Automatic Audio target detection with 3 Gamma sensitivity settings of 3 , 6 and 9 Gamma range

New Gamma Re-cycle switch with 1.5, 3 and 6 seconds Re-cycle times

New low battery condition readout

New RS-232 and RS-485 serial output

With these new features you can now operate with full control over the Discovery’s sensitivity to targets and by controlling when the Automatic Audio target detection alerts you to a detected target you spend less time watching the LED meter. No other Boat towed magnetometer on the market offers all of these feature in one easy to use package.

Discovery is designed to be taken apart for shipping in its own case, allowing you to easily travel with it in your car, plane, or boat!

• Built-in 10 position Mag tuning switch
  [Used for setting the Gamma value]


• Power on/off switch with alarm enabled position.


• Audio target detection alarm can be set for 3 , 6, and 9 Gamma


• Large LED Gamma readout meter with battery condition indicator


• Access plug for the gamma turning switches


• Discovery is a proton type absolute magnetic field readout magnetometer


• Built-in dual audio output speakers


• Proton sensor is Omni-directional


• Shipping weight approx. 30 lbs.

• Excellent noise canceling abilities


• High output with a very high gradient tolerance on the order of a 500 gamma’s per meter


• Operates on 12 volts dc.. Battery is not included.. any car battery or marine battery will work.. Small 12 volt gel-cell batteries will also work but must have a minimum 3 amp hour rating or more.


• Power cable with un-finished ends supplied for hookup to your 12 volt battery


• Sample rate setting of 1.5 , 3 and 6 seconds cycle times


• 100’ of cable standard


• Carry case standard


• RS 232 output standard


• 2 year warranty