A Measurement is a way to recognize size (this could be the thickness, length, widtch or diameter of an item, for example) often used for body jewellery. This ensures that the most comfortable size of jewellery is chosen for your individual piercings.
Wearing jewellery of the correct size in your body piercing is important, so knowing how to measure yourself makes buying and choosing body piercing jewellery quicker, safer and more convenient.
If the body jewellery is too short in your piercing it will aggravate the area, cause an excess of swelling and possibly lead to infection. If it is too long the body jewellery stands more chance of getting caught or snagged on clothes, fingers or hair.