Starrett -Squares

Attachments for combination squares

No. 289 Series

These attachments fit combination square blades 1" (25 mm) wide and permit attaching rules, blades or thin steel try squares, up to 1" (25 mm) 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 No. 289C Height and Depth Gage Attachment.


Attachments for combination squares
No. 289 Series 

Catalog No. EDP No. Description
289A 51322 Blade: 1" (25mm) Range, 1 9/16" (40mm) Length
289B 51323 Blade: 1" (25mm) Range, 2 3/8" (60mm) Length
289C 51324 Height and Depth Gage Set: Clamp Block, Scriber, Rule, Rod
298 51327 Key Seat Clamps (Pair)
299 51328 Rule Clamp

J.W. Donchin Co.
Ph: 773-261-2182 • Fax: 773-261-2867 • Email: