This document discusses customary units of measurement for length, capacity, and weight in the English system. It provides conversions between units and examples to demonstrate relative sizes. For length, it states that there are 12 inches in a foot, 3 feet in a yard, and 5,280 feet in a mile. For capacity, it gives the conversions between gallons, quarts, pints, cups and fluid ounces. For weight, it states there are 16 ounces in a pound and 2,000 pounds in a ton.