The new PHASE II miniature ultrasonic portable hardness tester is capable of measuring the surface hardness of a broad variety of metals on flat, round, thin or large surfaces. Accurate measurements of steel, cast steel, alloy steel and aluminum, are easily attained with these mini, ultrasonic portable hardness testers. The MET-HRC, MET-HB & MET-HV meet ASTM A1038-10 specifications.