This 72″ ruler, known as the Zig Zag Rule, features brass joints for durability and precision in carpentry and woodworking projects.
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Vintage Lufkin No. 1206 72″ Aluminum Folding Ruler Brass Joints USA Carpenter
No. 1206 — 72″ (6 Foot) Aluminum Folding Ruler with Brass Joints. Model: No. 1206. Type: Folding/zigzag carpenter’s ruler. Material: Aluminum ruler with brass joint hinges.