1:24 scale is a traditional scale for models and miniatures, in which 24 units on the original is represented by one unit on the model. Another way one may understand scale, is if viewing a 1:24 car from a foot away, it will be as if seeing the full size vehicle from 24 feet away. It is also known as "half-inch scale", since 1/2-inch equals a foot. Countries using the metric system generally prefer to use 1:25 scale, which produces a very slightly smaller model, and in informal usage the term "1:24 scale" is often used to include both.