ASTM D 1558 D 2573
This instrument is used to estimate approximate unconfined compressive strength and the estimation to shear strength of soil Cohesive soils can also be classified in terms of consistency using this Penetrometer. This is a handy and convenient instrument.
It consists of a light weight barrel assembly with a polished and ground steel loading piston plunger. A direct reading scale is engraved on the piston barrel and indicates load in kg. / sq. cm. A maximum load indicator ring is provided on the penetration plunger. The calibrated spring is heat treated and plated for rust resistance. The barrel diameter is 20mm and the length 150mm. Supplied with carrying case.