Fisher Labs SR-81 Sonde at 81.92 kHz on sale an adjustable backlight display ensures

an adjustable backlight display ensures that the Fisher F19 can be used effectively in low-light environments

Trigger-actuated FASTGRAB™ ground balance for swift adjustments

The antennas used in the search in the long-range locator system were developed by a patented technology system called "Super Antenna"

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Fisher Labs SR-81 Sonde at 81.92 kHz on sale an adjustable backlight display ensuresFISHER LABS SR 81 sonde at 81. 92 kHz Best Price Guaranteed Price Match Free US Shipping Manufacturer's Limited Warranty Made in the USA Fisher Sonde Signal Transmitter SONDE TW6 Fisher Sondes are small transmitters used to trace the path of non metallic pipes and locate blockage in lines. Sondes are inserted into a pipe or duct by means of a push rod and located using a Fisher receiver. FEATURES Rugged Design Long Battery Life Outstanding Distance &