Convenient 12" wood ruler is an essential classroom and office tool for quick measurements. Measurements are scaled in 1/16" on one edge and millimeters on the other. Pencil groove extends the entire length of the ruler so your pencil won't roll off your desk. Design also features double beveled edges, a single metal edge for making clean lines and a multiple-coat lacquered finish. Ruler is 1-1/8" wide and 5/32" thick.