Proctor Penetrometer

A spring-type Penetrometer that can be used in the field for the controlling of soil compaction. The stem is calibrated to 150 lbf x 2 lbf divisions, and a sliding collar indicates the applied load. A rapid estimate of the moisture
content of soil can be obtained by comparing the amount of penetration of the needle for a corresponding load, with a laboratory determined moisture/density curve for a similar soil.

The set comes complete with accessories, a carrying case, and 9 interchangeable stainless steel needles with diameters of 4.52, 5.23, 6.40, 9.07, 12.83, 16.54, 20.22, 24.79, and 28.55mm.

Product Code: AG25-500