Vintage STARRETT 289 (A) Right Angle Rule Attachment for Combination Squares. Stamped 289 not 289-A. Most probably predates or right around the introduction of the 289-B in Catalog 21 (~1916). In very good condition; works correctly; all screws and thumb nuts turn freely. No owners marks. Please check photos for actual cosmetic appearances. Thanks for looking. Feel free to ask any questions. Please check out my other quality machinist tools. I will combin...e shipping when possible to save you $. To get the most out of combined shipping, please ask for combined shipping price before paying for last item. Always sent properly packed and tracking number given as soon as its sent.