Range Blade/Rule: 1" (25mm)
Rule: 2-3/8" (60mm)
289B Starrett Attachment for Combination Square: 2-3/8" (60mm)
The Starrett 289B Attachment for Combination Square has the follow specs:
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. Available in two sizes listed
below. Both sizes can also be used with 289C Height and Depth Gage Attachment.
Attachments for Combination Squares
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