Standard measurements according to a system, e.g. a distance between the rails of a railroad

Answer of Word Craze Standard measurements according to a system eg a distance between the rails of a railroad

This is a tricky question of Word Craze which last appeared on Level 1549. Meanings or answers can change from time to time with each game update if you noticed a change on the answer of this clue please do let us know by commenting below so we can fix it A.S.A.P.
The solution below is:

For other clue answers of Level 1549 Word Craze Level 1549 Answer open the the level link.