Proctor Needle

It consist of a body housing a spring plunger calibrated to read 70kg X 1kg and a handle. Long stem, graduated at 12.5 mm interval to indicate to the depth of penetration and for use with needles of larger areas. Small stem, graduated at 12.5 mm intervals, to indicate the depth of penetration and for use with needles of smaller areas. One needle point set comprising one each of 0.25, 0.5, 1, 1.5, 2, 3, 5 and 6 sq cm. cross sectional area. Complete as above in a wooden carrying case.