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.
Andreas Stihl AG & Company is a German manufacturer of chainsaws and other handheld power equipment including trimmers and blowers. Their headquarters are in Waiblingen, Baden-Wuerttemberg wÃ¼rttemberg Near, Stuttgart. Germany stihl was founded in 1926 By Andreas, stihl an important innovator in early chain saw. production