The manufacture of burglar-proof vaults. Door and jamb. Composite plates. Hand-fitting doors and safe vestibule. Butting edges of plates. Screwing up door with ratchet screw driver.



Source: Steve Kirch, collector, and creator of a great website about SCIENTIFIC AMERICAN in the past

Restoration by: magscanner

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Created on

Monday 30 November 2009

Posted on

Monday 30 November 2009

Tags

bank, finance, money, protection, safety, treasury

Albums

• General Magazines / Science and Technology Magazines / Scientific American

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