Scale. Drawings are made either "full-sized" or "to scale." A full-sized drawing is one in which every dimension agrees exactly with the similar dimension of the object it represents. A drawing to scale is one in which every dimension bears the same fractional relation to the similar dimension of the object it represents. When a drawing is 1/24th the size of the object, it is said to be on a scale of 1/2 inch to the foot, or, as frequently written, 1/2 in, = 1 ft.; if 1/6th the size, as 2 in. = 1 ft., and so on. The scale 6 in. = 1 ft. is often expressed as "half size."