Tradesman Guide When Buying Torque Wrenches
There are actually 2 basic kinds of torque wrenches available in the market and they're beam wrenches and micrometer wrenches. The beam wrenches depend on the material's built-in flexibility. As the torque is applied, the wrench flexes while other rod with pointer at the end will indicate the torque that's being applied on scale. The latter on the other hand are preset to the torque required on vernier scale. There's an internal spring loaded mechanism that is measuring the torque. When the bolt or nut is tightened to the torque desired, you'll hear a click.
Between the two types of wrenches, it is the micrometer wrench at http://torquewrench.net/mountz-eds2000s-dial-torque-wrench/ that can provide more accuracy. Normally, they're rated as being accurate to 4 percent of torque set. On the other hand, this accuracy can be lost easily if ever the wrench isn't reset to 0 prior storage. Beam wrenches do not have this issue in accuracy but, they are less accurate. The accuracy that these wrenches have are often 12 percent but can be less when put on higher torque settings most especially if the hand is shaky from the pressure being applied.
Say that you're buying a torque wrench for your vehicle, you must buy a 1/2 inch square drive tool since a 3/8 inch drive tools work only on the lower torque settings, often below the manufacturers specifications. Adapters are also available in order to reduce the 1/2 inch square drive into 3/8 inch square to be able to fit more common socket size that many people have, check it out!
When you are tightening a bolt to proper torque, it is vitally important that your hand which pulls the wrench is centered on the wrench's handle. Having it too far or close from the socket will affect the ultimate value of torque you're tightening to. By moving your hand closer to socket will reduce the total foot-pounds of torque that you're applying, as you move it away, closer to the end of wrench, it is increasing the foot pounds of torque that you apply.
A big number of torque wrench manufacturers are supplying them with plastic storage box in order to protect them. Additionally, they come often with 1/2 inch to 3/8 inch square drive adapter while some come with drive extension. Torque wrenches are actually precision tools and have to be treated like such. Although majority of the micrometer wrenches have reversible ratchet head, they must not be used as a ratchet most especially not as breaker bar. Watch this video at https://www.youtube.com/watch?v=5XzKvEnk1FY and know more about torque wrench.
