Locating and Tracing Buried Utility Lines

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• 2-year limited manufacturer warranty

• Made in the USA 🇺🇸

Designed for professionals in utility locating and damage prevention, the Fisher TW-6 is a versatile instrument for tracing buried pipes, cables, and other conductive utilities. Trusted worldwide, this rugged locator stands out with its dual-mode operation—inductive and conductive—allowing for pinpoint accuracy even in complex underground environments.

The TW-6 operates at 81.92 kHz and offers both normal and high sensitivity modes, making it effective across a variety of soil types and utility depths. Its inductive mode allows quick locating of unknown lines without direct contact, while the conductive mode enhances tracing precision in congested areas. Features like peak signal audio response, numerical signal strength display, and a level indicator for depth triangulation enable users to detect and mark with accuracy. With optional accessories like tracer probes and coupling clamps, the TW-6 adapts to a range of field scenarios including manhole and riser detection, or non-metallic pipe tracing using tape.

Built with a lightweight, ergonomic design, the TW-6 weighs just 5.5 lbs, including transmitter and receiver. It features simple controls, fast assembly, and a balanced handle for extended searches. Durable enough to withstand tough job sites, it runs up to 30 hours on standard AA batteries. For crews needing reliable, field-tested equipment, the TW-6 continues to be the go-to solution.

Purpose: Locating and tracing buried utility lines (e.g., water, gas, electric, telecom)

Optional Accessories

• Tracer Probe

• Coupling Clamp

• 3-Piece Handle Kit

• Hard Carrying Case

• Ground Rod/Harness Assembly

• Stereo Headphones

• Rechargeable Battery System

Specifications

• Manufacturer: First Texas Products, LLC

• Brand Name: Fisher Research Labs

• Country of Origin: USA

• Operating Frequency: 81.92 kHz ± 0.005%

• Batteries: 8 AA (Receiver), 8 AA (Transmitter)

• Receiver Weight: 2.5 lbs (1.1 kg)

• Transmitter Weight: 3 lbs (1.36 kg)

• Total Weight: 5.5 lbs (2.5 kg, without accessories)

• Dimensions: 11.5" x 9" x 3" (29 x 23 x 7.6 cm)

• Operating Temperature: -10°F to +120°F (-23°C to +48°C)

• Sensitivity: Normal: 400 µV typical / High: 8 µV typical

• Signal-to-Noise Ratio: 110 dB

• Headset Impedance: 600 ohms (mono), 8 ohms (stereo)

• Shipping Weight: 6.75 lbs (3 kg)

• Shipping Volume: 69 cu. ft. (19.5 liters)

Explore more utility-locating tools in our Fisher Labs Industrial Detectors collection. Questions about the TW-6 or compatible accessories? Contact us and we’ll help you find the right fit.