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The ZHU2.5/Z2.5 is the most versatile all-round hardness tester the world has ever seen. It is based on a materials testing machine type "zwicki": Simply mount the hardness measurement head. The hardness measurement head is constructed so that it can be used with all Zwick materials testing machines, and for automation. Equipped with other tools or grips, this modular test system is also suitable for tensile, compression and flexure tests.

testXpert® is also utilized as the test software. A cost-optimized supplement has been developed solely for optical hardness test methods.

Integrated in the hardness measurement head are a digital travel measurement system, a load cell and an interchangeable indentor with measurement transducer.

On the whole the hardness measurement head encompasses all hardness tests with indentation depth measurement, e.g. Universal Hardness HU macro range or Martens hardness HM, Rockwell hardness, ball indentation hardness H, Vickers depth measurement HVT, and Brinell depth measurement HBT.

A supplementary Optic unit is used in conjunction with the hardness measurement head when testing according to Vickers, Knoop or Brinell. This unit consists of a measurement microscope with up to 4 objective lenses and a linear slide unit that permits the position between the measurement microscope and the loading assembly to be changed, thus guaranteeing that a component to be tested does not shift.