Description
The Proctor Penetrometer is used for determining the penetration resistance of fine-grained soils.
The unit consists of a special calibrated spring dynamometer with a pressure-indicating scale on the stem of the handle.
It comes with a stainless steel adapter stem for larger needles.
The pressure scale is calibrated to 100 lbs. by 1 lb. subdivisions. There is a major division located at each 10 lb. interval.
A sliding ring on the stem indicates the maximum load obtained during the test.
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