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.
Protective gear is not optional when using your chainsaw so be prepared to buy the gear you need to keep yourself safe from the moment you turn on your chainsaw. 1  The protective equipment you need is as follows: 2  safety pants or chaps. 3  Cut-resistant safety boots. 4  Safety glasses. 5  Head Protection. 6  hearing protection. 7  Gloves.