The meter comma is a 7-limit comma with a ratio of 703125/702464 and a monzo of [-11 2 7 -3. It is an unnoticeable comma of the 7-limit with a value of approximately 1.62828 cents, and is significant as the difference between a stack of three septimal kleismas and a syntonic comma. Tempering it out leads to a form of metric temperament.