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It can be postulated from Alberti's writings that this cipher device may have been created for high level secret use within the Vatican
The disks may also be useful as a teaching aide in learning Braille
A series of 5 challenge messages are provided for you to try and solve
How It Works
Napier's Bones - Quickly teach Your Child Math With This Montessori Toy escape roomw aiting room puzzle This is for the PIECESDesigned by John Napier in 1617, Napier's Bones is a fantastic way to explain and help your child understand how basic math functions. Consider the first "calculator" Napier's Bones is an invaluable to in any classroom environment. Whether you are a teacher in a traditional classroom or a parent homeschooling this is an essential ingredient to you curriculum. The frame measures 7. 5" x 7. 5" and the rods are cut from 1 8" thick alder wood. Two full
