Hydraulic Type Proctor Needle is identical to spring type Proctor needle except the penetration pressure on the needle is conveyed through a hydraulic pressure gauge 0-70 kg x 1 kg. This system permits a greater control over the rate of penetration because of a better visibility of a load indication. It consists of a body of a bellow housing casing pipe, pressure gauge, Handles, 2 off. Small stem, graduated at 12.5 mm intervals to indicate the depth of penetration and to use needle in smaller areas. One needle point set comprising one each of 0.25, 0.5, 1, 1.5, 2, 3, and 5 sq. cm. Tommy pin. Complete as above in a wooden carrying case.