Ruler and Textbook In A Backpack Clipart Image http://www.iclipart.com/search.php?keys=209059&id=198 Surfdoggie's Review: Clipart image of a ruler and textbook in a backpack. This color clipart picture shows a blue backpack or knapsack with a textbook and a straight ruler inside. It is a full-color clipart illustration, on a white background. Please visit the link above to find out how you may use these images. You may need to pay for use of the images or abide by certain licensing restrictions. academics, bag, bags, book, book bag, book bags, books, education, geometry, knapsack, knapsacks, learn, learning, measure, measurement, measurements, measuring, ruler, rulers, school, school supplies, school supply, schools, straight ruler, straight rulers, study, studying, textbook, textbooks, tool, tools, type of ruler, types of rulers