Starrett 9-12-16R 12-Inch Combination Square Set with Square, Center and Non-Reversible Protractor Head

The Starrett 9-12-16R is a professional-grade 4-piece combination square set built around a 12-inch hardened steel blade with 16R graduations — featuring quick-reading 32nds, 64ths, and aircraft quick-reading 50ths and 100ths. This complete combination set is a go-to precision layout and measuring tool trusted by toolmakers, machinists, carpenters, and mechanics alike.

The set includes a square head, center head, and non-reversible protractor head, all finished in a distinctive black wrinkle coating over durable cast iron construction. The hardened steel blade features a regular finish with photo-engraved graduations for lasting legibility.

Key Features:

• 12-inch hardened steel blade with regular finish
• 16R graduation type: quick-reading 32nds, 64ths, aircraft quick-reading 50ths and 100ths
• Cast iron heads with black wrinkle finish
• Reversible lock bolts for secure blade positioning
• Scriber included
• Spirit level in both square head and protractor head
• Direct-reading double 180° protractor scale
• Photo-engraved blade for durability and precision
• Non-reversible protractor head
• 4 pieces total: blade, square head, center head, protractor head
• EDP: 50043

Versatile enough to serve as a square, depth gauge, height gauge, scribing gauge, center finder, level, and plumb, the Starrett 9-12-16R is one of the most multi-purpose precision tools available. It is equally at home in metalworking shops, woodworking environments, and masonry applications. The set ships in a fitted case for organized, secure storage.