/ Precision Measuring Tools / Precision Hand Tools / Squares / Combination Square Accessories / 289A * Not actual product image 51322 289A Attachment for Combination Squares 51322 Other similar products These attachments fit combination square blades 1" (25mm) wide and permit attaching rules, blades or thin steel try squares, up to 1" (25mm) wide, at right angles to the blade of the square for laying out key seats, centers, scribing horizontal lines, and measuring diameters. Blade: 1" (25mm) Range, 1 9/16" (40mm) Length. Features Downloads Contact Starrett Features Range Blade/Rule:1" (25mm) Seat Length Blade:1-9/16" (40mm) Seat Length Rule:1-11/16" (43mm) Can also be used with 289C Height and Depth Gage Attachment Downloads Catalog 33 - Section 11 - Squares Invented by our founder, the combination square was our first product and today, our brand is considered to be the best available. This section offers a range of high quality solid squares, tri-squares specialty products and accessories that is especially broad and deep. Precision Hand Tools (Catalog 33) 612 page catalog featuring precision hand tool, force measurement, vison systems, optical comparators, laser measurement, and flat stock.