Scale: Unknown. A model depicting part of the process of manufacturing a scarph chock anchor, made entirely of iron. The model shows a lump of iron, roughly triangular in section with a flat face. Attached to this, and extending from it, is a long, tapering, four-sided bar which is slightly irregular in shape with a slight kink or shoulder at the wider end and terminates in a point at the other. On the V-shaped side '2' is stamped and a number '1' is stamped on the tapered square section.