Fisher Labs SR-81 Sonde at 81.92 kHz on sale an Advanced Visual & Audio

an Advanced Visual & Audio Target ID Metal Detector

Trigger-actuated FASTGRAB™ ground balance for swift adjustments

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

4 Reinforced Air Vent Holes For Ultimate Breathability

Fisher Labs SR-81 Sonde at 81.92 kHz on sale an Advanced Visual & AudioFISHER 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 &