Dime Scale models come in two flavors: Traditional, and Pseudo. Both compete under the same rules. Traditional Dimers are built from plans produced during the “golden age” of modeling; Pseudo Dimers are built from contemporary designs that honor the methods, structural simplicity, and details typical of those early plans.
1.0 BASIC RULES
A. Dime Scale models are to be of simple design and easy construction such as those built from 10 cent kits or plans representing full scale airplanes built prior to December 31, 1949.
B. Wing span: 16 inches maximum.
.From the FAC (Flying Aces Club) Rule Book 2018