Wood Ruler, English/Metric, 12", Three Hole Punched, Hang Hole, Lacquer Finish.Selected hardwood is finished with multiple coats of lacquer for added durability. Metal edge is ideal for straight-line cutting and for drawing clean lines. Scaled in 1/16" on one edge and millimeters on the other. Three-hole punched for easy-access storage in a binder, hanging hole at one end. Ruler Type: Standard/Metric, Length: 12 in, Standard Scale: 1/16 in, Metric Scale: Millimeters.