A typical ship’s wheel is composed of eight cylindrical wooden spokes (though sometimes as few as six or as many as ten) shaped like balusters and all joined at a central wooden hub or nave (sometimes covered with a brass nave plate) which housed the axle. The square hole at the centre of the hub through which the axle ran is called the drive square and was often lined with a brass plate (and therefore called a brass boss, though this term was used more often to refer to a brass hub and nave plate) which was frequently etched with the name of the wheel’s manufacturer. The outer rim is composed of sections each made up of stacks of three felloes, the facing felloe, the middle felloe, and the after felloe. Because each group of three felloes at one time made up a quarter of the distance around the rim, the entire outer wooden wheel was sometimes called the quadrant. Each spoke ran through the middle felloe creating a series of handles beyond the wheel’s rim. One of these handles/ spokes was frequently provided with extra grooves at its tip which could be felt by a helmsman steering in the dark and used by him to determine the exact position of the rudder—this was the king spoke and when it pointed straight upward the rudder was believed to be dead straight to the hull. The completed ship’s wheel and associated axle and pedestal(s) might even be taller than the person using it. The wood used in construction of this type of wheel was most often either teak or mahogany, both of which are very durable tropical hardwoods capable of surviving the effects of salt water spray and regular use without significant decomposition.