This refined 4-ratio dovetail marker is precision CNC machined from anodised aluminium and has a black finish with contrasting white markings. The outer edges have dovetail slopes of 1:5 on one side and 1:8 on the other. The inner cutouts offer additional slopes of 1:6 and 1:10. An engineer’s corner at the bottom of each slope ensures flush seating even over saw whiskers. A graduated imperial measurement scale, etched onto each of the blades, is a useful aid when setting out.