Gracie Buchanan Wrenches September 13th, 2018 - 20:31:00
Micrometer wrenches are pre-set to the required torque on a vernier scale. An internal spring loaded mechanism measures the torque. When the bolt is tightened to the desired torque it "clicks."
The Pipe wrench Otherwise called the Stillson wrench, this wrench mostly finds use among plumbers. This tool can be very convenient to use when working in a tight spot where the need for gripping power of an adjustable wrench is most needed. The tool has rough jaws with which it can securely hold the pipe. The pipes can be fitted easily using this wrench as the jaws will help the pipe to stay in place firmly.
Typically, a pipe wrench is composed of an upper hook jaw and a lower heel jaw, both connected to a flat handle. The lower jaw is adjustable to the size of the metal object. Forward pressure on the handle pulls the jaws closer for ease of gripping and turning. Usually made of aluminum or steel, pipe wrenches are available in various sizes measured by the length of the handle.
Three of the most common wrenches found in American homes are the pipe wrench, the adjustable wrench and the combination wrench.
Torque wrenches are precision tools and should be treated as such. Although most micrometer wrenches have a reversible ratchet head, they really should not be used as a ratchet, and especially not as a breaker bar. Most people who break their torque wrenches do so by trying to loosen an overly tight bolt with it. This overly stresses the internal mechanism, causing it to break, especially if the micrometer isn't set to a higher torque value than the pressure that is being applied.