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 Hand operated soil auger. Hardened tip and cutting edges. It penetrates by a left-right swivel motion and pressure and is tuff enough to stand on for added weight. And yes, it does pick up the soil (except dry sand). Hammer in tubes. Thick gauge steel pipe with hammer block. This is driven in with a 20lb hammer. It works particularly well in dry and compacted soil. Access tubes. Neutron probes require an access tube that is sealed at the bottom to keep the hole open and keep the water out. almost any material will do. Aluminum is the best but comes at a price. Irrigation type PVC (50mm class 4) is cheap but requires specific calibration. Capacitive probes such as the Diviner2000 requires a specially made PVC tube supplied by the manufacturer. Pricing
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