Brass/ Steel 9 in. Proportional Divider In Wood Box This New Reproduction is a Brass/ Steel 9 in. Proportional Divider, reproduction crafted in the style of a century ago with NICE HARDWOOD BOX ( may or may not have inlayed anchor as we are ending the inlayed anchor as we have many requests for plain box ). Adjustable locking nut and steel points on both ends. Nice item to bring back the look or many years gone by. Traditionally proportional dividers are used to increase or decrease the size of a project. As an example, you may want to increase or decrease the size of project by 50%. By using the 1:1.5 setting you can accomplish this task, and 1:2 setting will either reduce it by 1/2 or double it. This item is for the average user, not the person wanting high accuracy like the expensive ones, we sell many of these to schools where teaching with less expensive is important. These are handmade copies of the antique ones used many many years ago. This detailed item measures approximately 9 inches Point To Point and 3/4 inch wide. Box is approx. 10 x 1 1/2 x 1 1/2 in.