The Cas Chrom, or Foot Plough, was a simple but labour intensive tool for the preparation and cultivation of the soil. Highland land was farmed and divided on the basis of runrig, or lazy-beds. This method of land distribution was often communal, and the layout of the lazy-beds had to accommodate the contours and features of the rugged land. Use of the Cas Chrom and the runrig system extended well into the 20th century.

The Cas Chrom was often fabricated by the crofters themselves from available material such as driftwood found on the beaches. This implement has a long handle attached by an iron binding to a carved and formed knee of driftwood. This example has an iron sock bent around the tip, which is pushed into the ground using the foot peg. The handle is used to turn over the soil in a twisting motion. Though the Cas Chrom was suited to the rough land of the highlands, the crofter would have taken several days of hard work to plough his small lazy-bed.