Hand-arm vibration is usually not measured for a whole work shift but for representative intervals and works steps. To improve accuracy measurements can be repeated several times for averaging. However, VM-HAND can already display an estimated daily exposure value during measurement. The daily exposure time can be entered.
![1](drex_bullet_1.png) Preliminary assessment
Allows evaluation and color change of the measuring result already during the measurement. This feature is only available for triaxial measurements.
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![2](drex_bullet_2.png) Daily exposure time
This is the exposure time per day by the currently measured activity needed for preliminary A(8) calculation.
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