Measuring a bicycle chain's pitch can be used to identify chain wear and flag the need for a replacement chain and/or cogs and chainrings. Bicycle Chains: Length, Width, What's Best to Buy etc.
Daith piercing. A Daith piercing (pronounced DÃ¤TH) is an ear piercing that passes through the ear's innermost cartilage fold, the crus of the helix. In most areas this piercing is pronounced day-th which can be compared to the word faith, which is nonstandard. The standard pronunciation is doth like goth.
An industrial piercing (North America), sometimes called the bar (UK/Ireland), scaffold piercing or construction piercing, is any two pierced holes connected with a single straight piece of jewelry (compare to orbital piercing); however, it typically refers to a double perforation of the upper ear cartilage specifically.