Model TW82 Line Tracer w/Hard Case by Fisher Labs

A complete kit to detect leaks in pipes using sound.


The lightweight, state-of-the-art TW-82 utilizes advanced digital signal processing for precision locating performance, yet is extremely easy to use. The display is a large and easy to read LCD that gives the user all the necessary information to do the job. A digital keypad allows the user to set the volume level, check the battery level, or activate an LCD backlight. Depth measurement is done at the push of a button.

The transmitter allows the user to locate in either a conductive or inductive mode. A meter and switch make transmitter setup simple and quick.

In the Fisher tradition, the TW-82 is affordable, tough, and simple to use, while providing maximum performance. A two-year limited warranty comes standard with the unit.


  • Advanced digital signal processing for accurate locating
  • Instant target response
  • Automatic gain control for maximum sensitivity
  • Audio and visual left/right guidance
  • Large easy to read LCD display
  • Push button depth measurement
  • Operates on standard batteries
  • Hard or soft carrying case standard equipment
  • Weather resistant design
  • Impact ressistant


2-Year Warranty

Fisher warrants the TW-82 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. Warranty may vary outside the U.S. Please see Corrosion Control Products Company for details.

TW-82 Specifications


  • Frequency: 82.175 kHz
  • Azimuth Indicator: Audible and visual
  • Left/Right Guidance: Audible and visual
  • Over-Target Indicator: Audible and visual
  • Signal Strength: 
    Numeric display & audible
  • Signal Current Measurement: Numeric display & audible
  • Depth Measurement: Numeric display & audible
  • LCD backlight: Included
  • Battery Status: Visual 
  • Battery Type: Two D-cell batteries (included)
  • Battery Life: 40 Hours
  • Weight: 3.60 lbs.
  • Operating Temperature: 
    -4°F to +140°F (-20°C to +60°C)



  • Output Frequency: 82.175 kHz
  • Output Power: Normal Setting =0.25 watt
                            High Setting = 1.0 watt
  • Conductive Tracing: 2 to 2,000 ohms normal power-6dB
  • Magnetic Strenght: 2 to 8,000 ohms high power+6dB
  • Inductive Tracing: 15 Vm2, normal power
  • Magnetic Strenght: 25 Vm2, high power
  • Battery Type: Four D-Cell batteries (included)
  • Battery Life: 160 hours in normal power mode
  • Weight: 3.73 lbs



  • Ingress Protection Rating: IP65 (stands up to water jets)
  • Relative Humidity - 0 to 95% noncondensing