Maryanne Owen Wrenches September 08th, 2018 - 19:42:44
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."
Of the two types of torque wrenches, the micrometer wrench is definitely the more accurate. Typically, they are rated as being accurate to four percent of torque set. However, this accuracy can easily be lost if the wrench is not reset to zero before storage. Beam wrenches don't have this possibility of losing their accuracy, but are less accurate right out of the box. The accuracy of these beam wrenches is typically 12 percent, but can be less on higher torque settings, especially if the operator's hand is shaking from the pressure they are applying.
Combination wrenches are available in a wide variety of sizes for both standard and metric nut and bolt combinations. This simple hand tool does not require electricity, is designed specifically for the job that it is made to do and is highly resistant to breakage.
As everyone who has been through an apprentice program knows, bolts are used in construction, manufacturing, and assembly of almost everything. By having a combination wrench set at the ready, you can show that you have the ability to place or remove a bolt easily and efficiently.
A combination wrench set is useful for the aspiring motor mechanic as well as industrial mechanics, carpentry jobs, household repairs, automotive repairs and for common tasks such as furniture assembly.