Proctor Penetrometer Spring Type

Soil Penetrometers - Proctor Penetrometer Spring Type

Designed for use in the field for controlling soil compaction by initial calibration from laboratory tests for moisture density relationship.The instrument consists of a barrel housing a spring.
A piston compresses the spring and the piston rod is calibrated upto 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.