The measurements are made by the palm level, excluding the fingers. The norm needs as a preamble that, in the actual condition of knowledge, the gloves are unable of giving a significant attenuation to the vibrations inferior to 150Hz. Certain gloves can inclusive increase the frequencies, but it’s important to retain that keeping the hand dry and warm are important properties of a glove and they are of great use in the reduction of certain effects induced by the vibrations. The only measurement of the transmission factor by the EN ISSO 10819 norm is not enough to do a sanitary risk evaluation originated by the vibrations. Norm definition about the vibration transmission: - It’s a vibration transmission factor (percent) measured in the hand surface without protection and under the palm of the anti-vibration glove before a vibrating tool. The transmission values superior to 1 indicates that the glove expands the vibrations, the values inferior to 0,6 indicate that the glove lightens the vibrations. The tests are made to the frequencies from 31,5 Hz to 1259 Hz representing the more current vibrating tools. - Medium frequencies spectrum: 31,4 to 200 Hz - High frequencies spectrum: 200 to 1250 Hz. To test the conformity with the EN ISO 10819 norm, it’s necessary that: - The transmission in medium frequencies: TRm is <1. - The transmission in high frequencies: TRh is <0,6.