The Faithfull combined feather edge and straight edge is made from extruded mill finished aluminium which is exceptionally light and manoeuvrable. Manufactured with one edge tapered and one flat edge. It can also be used as a straight edge for ruling and cutting. The models featuring the scale along the length are graduated in metric at 5 mm intervals and numbered every 50 mm. The 'FE6FE' has one edge sharply tapered and one flat edge.