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• Auto-lock blade assembly
• Steel blade with permanently stamped graduations 1/8", 1/16"
• Heavy duty cast zinc head with black, chip resistant e-coating finish
• CNC machined square head for greater accuracy
• Hardened, screw-in scriber won't fall out
• Durable acrylic vial
Manufacturer's Part Number: #400
Big R SKU: #4944840000