Torque wrenches to get the accuracy. Period. It doesn't matter whether it's just tightening the lug bolts on the family car or tightening a fastener on a piece of machinery that costs hundreds of thousand dollars, knowing the exact torque, or tightness, will ensure optimal operation.

Now for those of you just acquiring knowledge on these types of wrenches, Tohnichi torque wrenches, in fact all types of torque wrenches can be classified into two main categories. One category is the "indicating" type. For those of you involved in inspection work, you're probably very familiar with this type. Just as the name states, it measures a value of tightness and gives the user a value that is expressed numerically.

The second category of wrenches are known as "click" type. These type of are probably the most common in repair environments. When the tightness of a fastener reaches the desired torque, the wrench "clicks" and releases pressure usually within 2 degrees of the turning radius. OK, got a little scientific on you there for a bit, just couldn't resist it!

If you want to get even further in depth, within each category of torque wrenches, you also have various choices, anywhere from manual, to angle to full power torque wrenches. And naturally, the more complex or scientific you need your torque wrench to be, the more investment you will have in your piece of equipment.

And don't just think having a Tohnichi torque wrench is just for the professionals. The next time you have to change a flat tire and can't break the lugs free, you'll see why having the right torque is the only way to go when you reinstall it. In fact, while your at it, might as well check all of them, right?