Show some national pride with this useful product! Each Flags of the World clear ruler measures in at 15 cm and features a cute graphic of your favorite country's flag. Whether you're a citizen, history nerd, sports fan, or maybe a fan of one of those weird "countries are people or maybe just metaphors or maybe crude geometry" series*, this ruler will make a perfect addition to your tool box, artist supplies, or school supplies.
*That said, this product is not officially associated with any of those series, just so you know!