Scale: circa 1:4. A model of a coaking machine made entirely in metal. The machine is supported on three architectural brass columns and three smaller columns above. The frame is made of brass and the working components are made in brass and steel. The two sheaves, together with the baseboard, are made in mahogany. The sheave from the rounding and drilling machine is fixed on a disc, working on a revolving spindle, in a frame which can be moved in a horizontal direction underneath a vertical revolving cutter. The frame can be moved to fixed distances past and under the cutter. The sides of the sheave are recessed into the shape necessary to receive the coak. On base of model: 'H' and 'No 41 Div B Class 14'.