The static cone penetrometers can be used to evaluate soil consistency by determining the soilâs level of compaction and/ or the bearing capacity. Especially useful in evaluation shallow foundations and pavement subgrades where fine-grained and soft soils are being used. Can also be used to aid technicians in quickly selecting sites for testing, as well as correlating with other tests, based on local conditions, such as standard or modified Proctor, CBR or Bearing Capacity. Humboldt static cone penetrometers use a dual-rod design, which eliminates the need to correct for soil friction on the rod as the cone is pushed through the material. Available as digital, Analog, Proving Ring Type, and Corps of Engineers Models.