Artline dual side measuring ruler, centimetre scale is on one edge of the plastic ruler and inch scale is on the other edge.The plastic straight ruler is made of good quality plastic, durable and sturdy; A good measuring tool, easy and convenient to us.Translucent colour allows for a clear view of numbers and letters on the page; With the clear mathematics ruler, you can measure an object easily.Translucent colour allows for a clear view of numbers and letters on the page; With the clear mathematics ruler, you can measure an object easily.