Fabric quantities can be measured in BOLTS, which is a unit of measurement consisting of a large roll of fabric that is typically between 30 and 60 yards long. BOLTS are often used to measure the amount of fabric needed for a project, such as a dress or a quilt. The term 'BOLTS' is derived from the French word 'boule, ' which means 'BALL.' A bolt of fabric is usually wound into a cylindrical shape, resembling a BALL.