… for testing the hardness, strength, compressibility, elasticity or other mechanical properties of materials (for …
Explanatory notes
… for testing the hardness, strength, compressibility, elasticity or other mechanical properties of materials (for … or for analysing materials, or measuring properties such as porosity, thermal expansion, etc. ( heading 90.27 ). (b) … portable or even pocket size instruments. Some “universal” types (e.g., for metal testing) can be used for hardness, …