Unfortunately, chain saws and vibration just go hand in hand. If you use a chain saw, you’ll be exposed to some level of vibration. The effects of vibration can be hard to see or feel, but repeated exposure to vibration during frequent chain saw use can still be harmful to your hands. The risk is increased if you use your saw for long periods and the types of injury can include circulatory problems, numbness, or painful sensitivity to heat and cold.

How is Vibration Measured?
Vibrations are detected during actual cuts by placing sensors on the saw handles. An internationally recognized method for measuring chain saw vibration has been developed and the ultimate measurement obtained from vibration tests is now known as the “W.A.S.” or “Weighted Acceleration Sum."