Standard for Measuring Dimensions
| Classification | Dimensions
(A) | Dimensions of top tape extension
(B) | Dimensions of bottom tape extension(C) | | Closed-end zipper | From the top end of the slider to the tip of the bottom stop | From the top stop to the to the tip of notches of the cut end
 | From the bottom stop to the tip of notches of the cut end | | | | Zipper with double sliders (arranged in head to head relation) | From the tip of one bottom stop to the tip of the other bottom stop | From the upper bottom stop to the tip of notches of the cut end
 | From the tip of the bottom stop to the tip of notches of the cut end | | | | Zipper with double sliders (arranged in bottom-to- bottom relation) | From the top end of one slider to the top end of the other slider | From the top stop to the tip of notches of the cut end
| Same as the top tape extention end portion | | | | Open-end zipper | From the top end of the slider to the tip of the box | From the top stop to the cut end
 | | | | | Two way separator | From the top end of the slider to the bottom end of the supplementary tape | From the top stop to the cut end
 | | | | | Top open zipper | From the top stop to the tip of the box | From the top stop to the cut end
| | | | | Reversible slider | Rather than from the top end, measurement should be made from the shoulder inlet portion of the slider | From the top stop to the cut end
 | | | | | When the top stop does not enter the slider | Measurement should be made from the top stop | From the top stop to the tip of notches of the cut end
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Structure of Zipper
Zippers can be divided into three major parts: the tape, elements and slider.
| | SLIDER | The slider joins or separates the elements when the zipper is opened or closed. Various types of sliders are available depending on use. | | ELEMENTS | The teeth, also known as elements, are the parts on each side of a zipper that mesh, or engage, with each other when passed through the slider. When the left and the right side teeth are engaged they are called chain.
| | TAPE | The tape is manufactured exclusively for zippers. It is usually made of polyester, but depending on use, synthetic fiber tape, vinyl tape and cotton tape are also available.
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