The first commercially available all-metal Router Pantograph. Make mortise and tenon joints super quick and easy; very unique. Higher-res photo and info in comments [975x717] : r/toolporn
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Vintage Sears Craftsman Router Pantograph 3 Dimensional 925187 Original Box for Sale in Port Jeff Sta, NY - OfferUp
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Making a Pantograph Engraver & Inlay Router (Luthiers Books): Brenchley, Gary: 9781508699255: Amazon.com: Books