PENETROMETER


Meaning of PENETROMETER in English

[ ˌpɛnɪ'trɒmɪtə ]

■ noun an instrument for determining the hardness of a substance by measuring the depth or rate of penetration of a rod or needle driven into it by a known force.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.