Schonstedt 33 kHz Standard Sonde for C.A.T4+ | 10/SONDE-STD-33 200221 three low-frequency filters and two

three low-frequency filters and two Notch filters that can clear away various noises

This adaptor is made of high-quality cast aluminum

Chuck capacity (inch): 1/2 in

The Northwest Instrument NRB503 Rechargeable Battery Pack is compatible with the NETH503 digital theodolite

Battery eco system: BLi-X

Schonstedt 33 kHz Standard Sonde for C.A.T4+ | 10/SONDE-STD-33 200221 three low-frequency filters and twoThe Schonstedt 33 kHz Standard Sonde is a compact, battery powered transmitter designed for locating non metallic pipes, drains, ducts, and conduits with a compatible C. A. T4 cable avoidance tool. When connected to a flexrod or similar insertion device, the sonde transmits a 33 kHz signal that can be traced from above ground to identify the route and approximate position of the underground line. Its compact 1. 53 inch diameter and 4. 13 inch length