Hand-arm vibration is experienced through the hand and arm. Daily exposure to hand-arm vibration over a number of years can cause permanent physical damage, usually resulting in what is commonly known as “white finger syndrome”, or it can damage the joints and muscles of the wrist and/or elbow.
Measurement of hand-arm vibration refers to three main cases:
• when the operator's hands have direct contact with the surface of the vibrating machine (steering wheel or handle),
• when the operator feeds the machine with the material through which the vibration is transmitted to a hand (wood cutting),
• when the operator holds the vibrating device in hands (drills, pneumatic hammers).