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from Etsy

Wooden Gear Clock, Unique Wall Clock, Industrial Wall clock, Cog Clock, Wedding Present, 5th Anniversary, Gift for him, Gifts for Dads


Now this would make a very cool geocache: The Codex Silenda. It's a wooden book where access to each page is protected by a mechanical puzzle. People must solve the puzzle that precedes each page by maneuvering gears and bolts before they can continue, and the mechanical encryption grows progressively more complex as you advance through the book. Could you imagine this as a puzzle cache with the log sheet on the final page? (pics stitched together by I.B. Geocaching Supplies) #IBGCp