Pocket penetrometer provides accurate measurements of the compressive soil strength. This 6-1/4'' unit is spring-operated, and it measures strength in tons/sq. ft. or kg/sq. cm by pushing a 1/4'' diameter loading piston into soil to a depth of 0.25''. The end area is a 0.25'' compressive load which is indicated by reading a scale on the piston barrel. A friction ring indicates maximum reading. Made of anodized aluminum. An Allen wrench and plastic carrying case with belt loop are included. 

Product Features:-

The new pocket penetrometer, weighing less than 5 ounces, reduces the human error in classification of cohesive soils.
The penetrometer can also be used with the torsional vane shear tester (TVST) for rapid estimation of the degree of internal friction of soil.
The pocket penetrometer is now required by OSHA on most excavation jobs and its use is mandated in the OSHA manual titled "Construction Standards for Excavation".
It is a spring operated device used to measure compressive strength by pushing a 0.25" (6.4mm) diameter loading piston into the material being measured up to a calibration groove machined on the piston 0.25 from the end., "easy-tochew" chunks.

Technical Details:-

For used to obtain quickly and easily an approximate measure of the shear strength of cohesive and semi cohesive soils.

Range 0 - 5 kgf/cm²

Dimension (mm) - 20 mm Dia. x 173 mm lgth

Approx. Weight - 0.5 kg