The scale of the model aircraft will tell you how the dimensions of the model compare to the actual aircraft. But that alone won’t tell you how large the model is going to be. To get the actual size of the model, you also have to look at how large the real aircraft is. The most popular scale for model aircrafts is 1:72. This is the medium-sized model. If you want a model that is smaller than that, then there are 1:144, 1:350, and 1:720. There are also larger models than 1:72 as well. Models having scales 1:48 will be almost double the size of 1:72.