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The Starrett 56404 is a two-piece 24-inch combination square (model C33H-24-4R) with a hardened, machine-divided steel blade and satin chrome finish. The blade uses 4R graduations (8ths, 16ths, quick-reading 32nds, 64ths). The set includes a forged and hardened steel square head with smooth black enamel finish, a reversible lock bolt, integrated scriber, and a spirit level for layout, squaring, and inspection tasks.
Two-piece 24" combination square with 4R graduations, forged steel head, and integrated scribe and level.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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