GRAIN MOISTURE METER Get the most from your fields with the cost-effective, user-friendly Soil Compaction Tester from DICKEY-john. By simply pushing the tester into the ground at different locations, this convenient, practical tool will help you find problem areas that can inhibit root growth and reduce yields. Just check the gauge to find readings of the pressure required to penetrate your soil. Maximize your success for less with the Soil Compaction Tester. Soil Compaction Tester, Probe Length 30 In. , Probe Dia. 1/2 And 3/4 In. , Probe Material Steel, Pressure Range 0 To 500 Psi, Includes Two Tips And Instructions