Fisher TW-770

This used Fisher TW-770 pipe and cable locator is a rugged field instrument built for tracing underground utilities including water, gas, and electrical lines. Fisher locators are widely recognized in the plumbing and utility locating trade for their durability and straightforward operation in the field. This unit continues that reputation with reliable signal detection across a range of soil and burial conditions. The TW-770 features adjustable sensitivity and frequency settings that allow technicians to isolate specific lines even in areas with multiple buried utilities running close together. Its lightweight construction and simple control layout make it a practical choice for plumbers and locate technicians who need dependable results without a steep learning curve. The unit pairs well with signal transmitters for active tracing on non-metallic and metallic lines alike. This unit has been inspected and tested for proper operation, showing expected wear from field use including some fading on printed labels and minor surface scuffing. It functions correctly during locating tests and is offered as a dependable used option for locating professionals looking to add capacity to their equipment fleet.