Top 12 Detectors

Fisher TW-6 Pipe & Cable Locator

Find underground pipes, cables, manhole covers, vaults,& other metallic objects
*IMPORTANT!: The rod (shown in 3rd image) is not included, must order seperately.
The Model TW-6 "Two-Box" metal detector finds underground pipes, cables, manhole covers, vaults, valve boxes and other metallic objects. Like earlier models, the TW-6 is used primarily by water departments, telephone companies, power companies, gas companies and petroleum pipeline companies when making repairs and rearranging lines. The TW-6 shows where to dig, as well as where NOT to dig, an important consideration when working near gas lines. To increase the instrument’s sensitivity, Fisher engineers removed all unnecessary metallic parts on the TW-6, replacing them with durable ABS molded plastic. Newly designed coil windings, completely upgraded electronics and nonmetallic parts have boosted the tracing distance of the TW-6 by 50-100 percent.

With the TW-6 longer tracing distances, which used to require expensive high-powered fault locator/tracers, can now be accomplished economically. In the Fisher tradition, the TW-6 is affordable, tough, and simple to use while providing maximum performance. A two year limited warranty comes standard with the unit.

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Instruction Manual Instruction Manual
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Fisher TW-6 Pipe & Cable Locator
Retail price $780.00
Add to Cart
Cat# 12-1020
Now Only $741.00
Or Call Toll Free 1-888-535-5926
  • Finds underground pipes, cables, manhole covers, vaults, valve boxes and other metallic objects
  • Affordable, tough, and simple to use.
  • The industry standard
  • Unlike other units that use a separate transmitter and receiver, the TW-6, when mounted on the handle, can conduct “blind” searches of an area to locate an underground pipe or cable where the starting point is unknown
  • Noise cancelling circuitry eliminates power line interference
  • Two year warranty

The TW-6 Performs 3 Different Searches

conductive tracing1.  Conductive Tracing
This is the preferred method for tracing because the Transmitter makes a direct physical hookup with the line to be traced. Plug the TW-6 Ground Plate Assembly into the Transmitter with one wire going to an alligator clamp that is attached to the pipe, non-energized wire or conduit.  This concentrates the signal on the known line to be traced, and there is less chance of the signal being induced to a nearby or adjacent line. Tracing distances are increased 25-50 percent over the Inductive method. Nonmetallic pipes may be traced Conductively if the Ground Plate Assembly is attached to a plumber's "snake" or electrician's "fish tape" running inside the pipe. tw-6 inductive tracing

 2.  Inductive Tracing
When one point of an underground linear conductor (such as a pip or cable) is known, place the Transmitter Box of the TW-6 over it and trace in either direction.  Walk out the path of the line and swing the TW-6 Receiver Box left and right over the line while listening for the audio signal tone.  As you walk away from the Transmitter Box, tracing farther down the line, the Transmitter signal will become faint, but the Transmitter Box can be moved closer to you so that tracing can continue to the end of the line.

inductive locating3. Inductive Locating
Using a 4-foot handle, position the Transmitter Box behind while the Receiver Box is ahead.  Walk a grid pattern to discover the location of buried metallic objects.  Watch the meter on the TW-6 Transmitter Box and listen for the signal tone to discover the location of a metallic object, such as a pipe, cable or vault box. Mark the pavement with chalk for each signal location.  Soon a pattern will emerge that shows the location of underground linear objects, such as pipes and cables, or nonlinear items, such as a buried manhole cover. As shown with optional rod assembly

  • Operating Frequency: 81.92 kHz + .005%
  • Batteries: 8 each AA (NEDA 15)
  • Weight: 3 lbs. (1.36 kg)
  • Sensitivity:
    • Normal: 400 uV typical
    • High: 8 uV typical
  • Signal-to-noise Ratio: 110 dB
  • Headset Impedance: 600 ohms (mono)
    8 ohms (stereo)
  • Dimensions: 11 1/2” x 9” x 3”
    (29 x 23 x 7.6 cm)
  • Operating Temperature: -10°F to +120°, (-23°C to +48°C) depending on
    batteries used
  • Total Weight: 5.5 lbs. (2.5 kg) - (without handle accessory, ground plate assembly
    & op manual)
  • Total Shipping Weight: 6.75 lbs. (3 kg) - (including only ground plate assembly and operating manual)
  • Operating Frequency: 81.92 kHz + .005%
  • Batteries: 8 each AA (NEDA 15)
  • Weight: 2.5 lbs. (1.1 kg)
  • Dimensions: 11 1/2” x 9” x 3”
    (29 x 23 x 7.6 cm)
  • Operating Temperature: -10°F to +120°, (-23°C to +48°C)

2 Year Warranty:
Fisher warrants the TW-6 to be free of defects in materials and workmanship when it is shipped from the factory. The terms of this warranty are fully explained in a warranty registration card that accompanies the instrument. Complete factory and field service facilities support the warranty.
*Please call 1-888-KELLYCO for warranty information outside the United States.

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Kellyco metal detector logoInformation:
  • All Shipping is Carrier Calculated to Give You the Lowest Shipping Cost Possible.
  • Kellyco reserves the right to substitute any free items in accessory packs/kits/options when items are no longer in stock.

Kellyco metal detector logoReasons to buy your metal detector from Kellyco:

  • Fisher provides an excellent two to five year limited warranty depending on metal detector model.
  • Kellyco Metal Detector Superstore provides a rock-solid lifetime program of backup and support. You are welcome to contact us to answer questions and assist you with any problems or concerns as long as you own your metal detector.