Soil Penetrometers measure the compaction of soils and sands. We also have a Fruit Penetrometer. They measure in the scale of kg/cm2 and we sell them as a dial pocket type for ease and convenience. Soil Pocket penetrometers come in two types. A Basic type that measures in 0-6 kg/cm2 and "geo-tester" that has 5 different size tips that can handle all types of solid from sand to sandy loams to clay. Our Fruit Penetrometer comes with 2 tips to cover a wide variety of fruits to determine hardness and ripeness.