With a 10 inch size, the Alvin Divider Proportional allows for artists to make proportional and accurate drawings in which they can comfortably rely on when completing pieces of art. The divider provides artists with an easy way in which to be able to mark and set different aspects of a piece of work in order to allow it to meet certain specifications or precise measurements. Ultimately, it is a tool that puts more control in the hands of artists and creators, and allows for some of the best designs to be made on the market. The 10 inch divider tool span allows for a large distance to be marked and selected and creates a professional and concise measurement for artists to use in their drawings. Comes in a Velvet-lined case.