Coopay Large Triangle Ruler Set Square 3060 and 4590 Degrees Circular Hollow

Large triangle ruler set come with a 6 inch 45 90 degrees triangle ruler and a 9 inch 30 60 degrees one Highquality material the set square is constructed of plastic material durable and sturdy Translucent color allows for a clear view of numbers and letters on the page Double scale measurement ruler 2 kind of measuring units inch markings on one of the rightangle side and centimeter numbers on the other side to meet your different needs With hollow center the circular hollow makes it easy to grip and student can use this hollow to draw circle Wide application the rulers with rightangle are useful tools for architects engineers artists designers students teacher etc.