3D Inspirational Rulers by Blue Diamond Publishing These 3D rulers are bendable and durable. It is made with quality PET material. There are 28 rulers, each with a variety of colours and subject matter with inspirational messages, quotes and scripture verses for all ages. The front of the ruler, top view, contains the different subject matter such as: the alphabet with vowels, numbers 1-20, colours & shapes, arithmetic symbols, roman numerals and much more. The back of the ruler, bottom view contains the centimeters and inches along with uplifting messages, quotes and Bible verses. This is a great gift for all ages and can be used as tokens for gift bags and souvenirs