Everyone has at least one credit card in their wallet, not to mention various gift cards, IDs and store discount cards. Turn them into something useful with these clever Cardstick Ruler Stickers. The set of three ruler stickers are 3 inches in length, so each fits perfectly on any common credit/debit/gift card. The sticker has both inch and centimeter guides, so you’re always ready to take a quick measurement and better prepared to guess when it comes to larger items. The long-lasting, easy to apply stickers come in three colors.