ˌpenə.ˈträməd.ə(r) noun
Etymology: International Scientific Vocabulary penetro- (from Latin penetrare + -o- ) + -meter
: an instrument for determining penetrability or ability to penetrate: as
a. : an instrument for measuring the consistency of semisolids (as pitch, grease) from the depth to which a needle penetrates under given conditions
b. : penetrameter