Durable plastic rulers feature double beveled edge with pencil groove. Raised calibrations show 1/16 inches on one edge, millimeters on the other. Holes allow for storage in ring binders. Assorted colors. Let us choose your color. Sold as a pack of 36 rulers. Double beveled edge. 1/16" on one edge. Millimeters on other edge. Holes allow for hanging storage. Age: 8+ years/Grade 3+