The stratosphere (/ËstrÃ¦tÉËsfÉªÉr, -toÊ-/) is the second major layer of Earth's atmosphere, just above the troposphere, and below the mesosphere. About 20% of the atmosphere's mass is contained in the stratosphere.
The chainsaw is a highly effective and efficient tree and branch cutting power tool. It works with an engine, referred to as a power head; powering a metal chain, driven by a centrifugal clutch, with a chain moving around a groove in the guide bar at fast speeds.
In 1972, Atom manufactured their own chainsaws and was the worlds first chainsaw company to have its complete range of chainsaws with electronic ignition (patented), turbo action self cleaning air cleaner (patented); as well as Atoms (patented) Anti-Vibration system fitted to most models.