The Gray Scale - Rabbit Dogs - Jim Lane - The Gray Scale was created by Hall of Fame Field Trialer and Beagle Breeder Elmer Gray, who used it religiously to formulate a strategy to breed dogs It was used to level, balance, tweak and correct faults in his hounds Mr Gray wrote about it in the mid 1950’s and a brief description of it can be found in the book “The Grayline Story” {By Elmer Gray As Told To A D