Dickey-John Soil Compaction Tester Price For: Each Manufacturers Warranty Length: 1 year Probe Length (In.): 30 Probe Dia. (In.): 1/2 and 3/4 Probe Material: Steel Pressure Range (PSI): 0 to 500 Item: Soil Compaction Tester Includes: Two Tips and Instructions Country of Origin (subject to change): United States