Pinit Ruler 18" SKU: 466803 $8.75 Quantity discounts available QuantityPrice Quantity -+ Add to Shopping Cart Details These pH neutral paper tapes are for edging display boards, hanging These wood rulers have both inch and centimeter calibrations and feature a single ... Details Back DetailsThese pH neutral paper tapes are for edging display boards, hanging These wood rulers have both inch and centimeter calibrations and feature a single hole for hanging. The 12" ruler is 1/8" thick and have metal edges.