Scale:Unknown. One of a series of models showing the construction process of a Perrin anchor. Made entirely from iron, it comprises of a central rod which is circular at one end and square with a pointed taper at the other, it is surrounded by eighteen segmented or wedged shaped rods which form a circular sleeve, all of which are secured in position by two iron hoops. This model shows the third stage in a series of seven showing the construction process of the Perrin anchor. See also SLR1995 and SLR2853-SLR2858 for the rest of the set.