Used in the field for penetration resistance/compaction of fine grained soils.
The penetrometer is spring loaded with a graduated scale on a sliding rod and a conversion chart to kg in the user guide.
Complete with 9 interchangeable stainless steel needles in the following diameters:
4.52 - 5.23 - 6.40 - 9.07 - 12.83 - 16.54 - 20.22 - 24.79 - 28.55 mm
Chrome finished for protection.

 Click to view a PDF file of the User Guide