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HMA-671 Heavy-Duty Soil Pin is solid stainless steel, 18x0.375in (457x9.5mm) LxDia with T-Handle and used as an electrode in soil resistivity testing with the Wenner 4-pin method. It can be used with the HM-942 Analog or HM-944 Digital Soil Resistance Meters, and a set of four is included with the HM-940 Soil Resistivity Kit. The T-handle and pointed tip make penetration of dense soils easy.
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