Order #: C33-6
Mfg #: 50227
The Starrett Square Head, Center Head and Protractor Head fits any blade on all combination squares, combination sets and bevel protractors. Sizes 12", 18", and 24", and 300mm and 600mm are interchangeable. When ordering, specify complete catalog number and length of blade. The only exception is the Starrett 33J and 8 Combination Squares. 6" Center Head The only exception is the Starrett 33J and 8 Combination Squares.