Assertion: drill bit's length | /r/CapableOf | indicate a zero wear bit
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Source sentences:
text: It is the practice in the drilling industry to indicate the state of wear of a drill bit by the letter "T" followed by a number from 0 to 8 indicating the length of the teeth measured in 8th: T0, T3 and T8 for example indicate a zero wear bit (TO), a 3/8th worn bit (T3) and a worn out bit (T8), respectively.