Newcomb Spring of Canada Ltd.
The direction of wind of a spring can be determined by simply holding it in your hand with your fingers placed around the outside of the body and your thumb pointing straight up. If the last coil ends in the same direction that your fingers are pointing, that is the hand (direction of wind) of the spring. In the US most screws are right hand. As you turn the screw clockwise it moves away from you. This is very similar to a spring.