Just 1.5 x 6.7 in. and 7 oz, DynaPocket travels easily into the field to test hardness per ASTM A956-00 standard. Operator chooses material from one of 9 material groups. Tester then converts measured HL value to HV, HB, HS, HRB, HRC, or N/mm2 scale and displays individual or average value.Controls are accessed via 2 pushbuttons. Onboard signal processor renders device immune to gravitational effects.