The C-Thru Ruler Company was formed in 1939 in Bloomfield, Connecticut by Jennie R. Zachs, a schoolteacher, who saw the need for transparent measuring tools such as rulers, triangles, curves and protractors. Over the years, the company developed a strong reputation in the school and craft markets for high quality measuring devices, and for specialized products for drafting, designing and drawing. During the 1990s, the company expanded into the paper crafting and scrapbooking fields under the Little Yellow Bicycle and Déjà Views brands.