Proctor Needles (Spring Type)
Specification:
The instrument consists of a needle attached to a
spring loaded plunger, the stem of which is
calibrated to read 0 to 40 kg division. Long stem
is graduated at every 12.5mm to read depth of
penetration and for use with needles of larger areas .
The small penetration stem is also graduation in
12.5mm division and is used with needles of
smaller areas. Needle points one each of 0.25,
0.5, 1.0, 1.5, 2.0, 3.5 and
6.0 sq cm. And one Tommy pin is supplied.
Complete as above in a wooden carrying
case.