The item being offered here is a Yardage Slide Chart for the seamstress that makes draperies. This is a Graber Drapery Yardage Calculator from 1963. Made by the Slide-Chart Co., Perrygraf, Corp, Maywood, Ill. It looks to be the same on both sides of the chart just one side with the larger numbers of the finished lengths and the lower numbered lengths on the other side. It gives all the widths of fabrics most commonly used for draperies. It has a little bit of wear on the corners of the slides from handling, but overall, it's still in good condition for the given age. Found this in a boxlot at an auction of a seamstres' household where they did all sorts of drapery and upholstry work. Never know what will turn up in those boxlots! This measures 9 1/8" across. THe photo has a small, dark shadow on the lower right side. Nothing is there, just a shadow. It is lightly soiled but not as bad as the photo would have you believe, so sorry about that. If you have any questions about this item, please feel free to inquire about it. I'll get back to you as quickly as possible with an answer. Thanks for looking in at our shop today!