Scale: Unknown. A model of a Hall's anchor improved by H.P. Parkes & Co Ltd. The model is made entirely in brass with a lacquered finish. The shank is square in section. At the top of the shank there is a bow shackle that pivots on a bolt with a threaded nut. The shank pivots on the crown through an arc of approximately 80 degrees. The bottom of the crown is slightly convex and there is a rectangular aperture through which the bottom of the shank can be seen. The stock is flat in section, slightly upturned and tapers towards its ends and rests on a rectangular shoulder at the top of the shank held in position by a split pin. The single cast crown and arms can pivot and are held in place by a transverse bolt thought the shank which in turn is held in place by a threaded nut and bolt. The flange of the crown is slightly convex and on their upper face the flukes sweep upwards vertically to approximately half the height of the shank, with a pair of lateral flukes fitted underneath. One face of the shank is inscribed along its length: 'HENRY PERSEHOUSE PARKES & Co LTD'.