I googld it for you, but i'm sure you can do it aswell and there are lots of sites that will help you better. I don't think many jsp mechanics view the general help daily
Quote (Mechanic site)
What is the Difference between a torque wrench and a
socket wrench ?
A socket wrench is like a small steel tube – one end has ridges that fit precisely around a bolt. The other end often has an opening of 1/4″, 3/8″, or 1/2″ square. This end receives the protruded part of a ratchet with the same dimension.
Most torque wrenches look like a larger version of a ratchet — in fact, it often also has a ratchet mechanism.
The purpose of a torque wrench is to measure the precise amount of pressure you use to tighten down a bolt. Generally, you do this by placing a Socket wrench for the bolt size in question onto a Torque wrench. You will then dial (usually on the handle end) to the amount of torque the specification calls for — usually in Foot lbs or Inch lbs.
Affix the bolt receiving end to the bolt and tighten, clockwise. You will hear a clicking sound when you have reached the indicated torque.
Again, a Torque wrench is used to measure the precise amount of pressure(torque) applied to a bolt. This is usually done to assure you do not over-tighten the bolt and thereby strip threads AND/OR assure you do not under-tighten and the bolt gets loose while you are operating the bike(a rather dangerous situation).
A torque wrench can cost over $50.00, and you will likely rarely use it. You might just tighten the noted nuts/bolts firmly, then take it to a local bike shop and ask if it is tightened enough. They might take a torque wench to it to check it out. However, experienced assemblers generally just firmly tighten –unless it’s a high-end bike.
There are less expensive — but less precise –torque wrenches available. You would still affix a socket wrench on it. Difference: instead of a dial adjuster on the handle with the audible click, it has a floating pointer that points to the measurement imprinted at the head of this wrench.