# A B C D E F G H I J K L M N O P Q R S T U V W Y Z
Runners
Pair of solid wheels, resting on edge, mounted freely on a horizontal axle which was fixed to a vertical drive shaft. Runners rested on the mill-bed originally, later they were suspended about 75 mm above it. Runners were originally of limestone, later of cast iron or steel, and weighed up to six tons.