The "Geotester" Pocket Soil Penetrometer is designed for users that require a wider range of both cohesive and non-cohesive soils, from hard clay through to loose sandy loam and is ideal for on-site measurement of soil strength. It is most commonly used in land care, farming and also the construction industry. The Geotester comes with 5 different size plunger tips to provide the ability to test a broader range of soil types. To obtain a reading push the Penetrometer gently into the soil to the indication groove line. The results are worked out by a data table (included), based on the result value and the tip size/type. The results correlating are: Unconfined compressive strength The angle of internal friction "Phi" The Cohesion "C" The piston is pressed into the soil up to the calibration notch. The maximum force is retained on the dial until released by a push button. Best practice is to take the average over 10 results. All external parts are made from stainless steel; the spring is nickel-plated steel and the internal mechanics are brass. It has tips of 1/4", 10mm, 15mm, 20mm and 25mm diameter. Its outer dial reads the penetration force in Kg. Its inner dial is calibrated in unconfined compressive strength for the 1/4" tip, with the units being kg/sq. cm, which is equal to Tsf. FEATURES: 5 Plungers: 1/4", 10mm, 15mm, 20mm, 25mm Diameter Range 0-6 kg/cm2 and 0-11 Kg Zero reset button Peak Hold
