Check the listing for details. Agratronix Soil Compaction Tester | 08180 | 59040. Condition: New. Listed at 184.06 USD. Agratronix Soil Compaction Tester Get the best crop yield by measuring the extent and depth of subsurface compaction. Features: Item Soil Compaction Tester Probe Length (In.) 24 Probe Diameter. (In.) 1/2 and 3/4 Probe Material Stainless Steel Pressure Range (PSI) 0 to 300 Includes Two Tips and Instructions 24” stainless steel rod with adjustable shock collar to prevent damage to gauge during transport or storage Easy to read, color-coated, stainless steel dial that is liquid filled to reduce shock Durable molded housing with rubber grip handles Large and small tip included with convenient storage in tester housing Hanger hole with nail included for easy storage on wall or above workbench Specifications: Penetration Depth ~ Up to 24” in 3” increments Green Testing Range (0-200 psi) ~ Good growing conditions Yellow Testing Range (200-300 psi) ~ Fair growing conditions Red Testing Range (300 psi and above) ~ Poor growing conditions Two Tips Included ~ {½” tip for firm soil} ~ {¾” tip for soft soil} Why Test Soil Compaction? Increase yield by increasing root and plant development Increase the effectiveness of fertilizers, pesticides and herbicides Reduce time and fuel cost by reducing power needed to till a field Increase soil water retention