Starrett High-Accuracy Combination Square Heads
Attach to Starrett High-Accuracy Combination Square Blades with the included lockbolts.
Center Heads
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Center heads identify the center on pipes, rods, and shafts.
Cast Iron—Cast iron heads are durable, so they resist dents and scratches. However, they corrode more easily than zinc heads.
Hardened Steel—Hardened steel heads are more durable and last longer than cast iron heads.
High-Accuracy Combination Square Heads
Attach to High-Accuracy Combination Square Blades with the included lockbolts.
Center Heads
![]() |
Center heads identify the center on pipes, rods, and shafts.
Zinc—Zinc heads are lightweight and corrosion resistant.
Cast Iron—Cast iron heads are durable, so they resist dents and scratches. However, they corrode more easily than zinc heads.
Hardened Cast Iron—Hardened cast iron heads are more durable and last longer than cast iron heads.