Pocket Pentrometer

The pocket Penetrometer is regarded as a simple tool to aid the engineers in field exploration and in checking and comparing similar types of soil, but it can never be used to obtain foundation design data.

This light weight Penetrometer is used in the field for classifying cohesive soils in terms of consistency and estimation of approximate unconfined compressive strength and shear strength.

In operation, the stainless steel cylindrical tip of 0.31 cm2 area is pushed into soil so as to penetrate up to 6 mm marked point. A cursor on the scale reads directly unconfined compressive strength in kg/cm2.

Designed for use in the field for controlling soil compaction by initial calibration from laboratory test for moisture density relationship. The instrument consists of a barrel housing a spring.

A piston compresses the spring and the piston rod is calibrated up to 40 kg in 1 kg divisions.

Two penetration stems which can be attached to the other end of the spring barrel, one at a time, to suit the needle point being used, are graduated in 1.25 cm divisions.

Supplied with eight needles of 6.0, 5.0, 3.0, 2.0, 1.5, 1.0, 0.5 and 0.25 cm2 area. Complete in a wooden box.

Same as above Spring Type except that it has a hydraulic system to record load. Calibrated up to 75 kg x 2 kg Divisions. Supplied with 8 needles, complete in a wooden case.