Measuring range from 0 ÷ 4.5 kg / cm ². Chrome. Point test tempered. Scale in tons per ft ² and in kg per cm ² of load. Penetrator meters used to classify soil types according to their resistance to compression - on the scale reads directly the compressive strength in tons per square foot, or in kg per cm ². Sachet. Accompanied by a warning for making foundations and for the use and maintenance.