So, back to the original question about what MOD means. Well MOD is the ratio of the pitch circle diameter (PCD) to the number of teeth. DP for imperial gears is the number of teeth per one inch of pitch circle diameter. So whilst that may well answer the question, it doesn't really help appreciate the size of a gear.
doer. n. 1. a person or thing that does something or acts in a specified manner: a doer of good. 2. an active or energetic person. 3. a thriving animal, esp a horse. (Ëdu Ér). n.
By Gerald Erichsen. Definition: A type of word that refers to a noun and determines which object, person or other entity the noun represents.Determiners are usually classified as a type of nondescriptive adjective, and with the exception of numbers they have little meaning apart from the nouns they refer to.y Gerald Erichsen. Definition: A type of word that refers to a noun and determines which object, person or other entity the noun represents.