5 double sided gears can provide 266 billion different possible keys. Each gear has 37 teeth containing the English alphabet, the digits 0 thru 9 and a decimal point (or period). The machine is relatively easy to use to encode your own highly encrypted secret messages! Send and receive secret messages to anyone who has a machine. We provide an encryption worksheet with your order that is also available electronically and can be useful in encoding and decoding messages. Hardwood construction with gears cut from thick wood. All letters and text are deeply laser engraved into the wood. The gears turn on alloy steel pins. Each gear is 4 in diameter. Base measures about 21 x 4.5. Creative Crafthouse Made in USA Please watch video for more details on how to use the machine. We also are offering a series of decryption challenges with cash awards of $150. There will be a series of at least 3 challenges such as this, each one getting progressively more difficult. Note, we do not provide hints of any kind, nor do we provide wheel layouts for those wanting to try and program a solution without a machine. Entries can only be submitted by email. Contact info comes with the machine. The time stamp of emails will indicate winning entrant. Employees and family of Creative Crafthouse are not eligible. There is a similar prize offered on the Enigma IV machine. Only 1 win per customer on any enigma challenge (IV and V).Here is Challenge # 1 which became active Jan 26, 2015. I suspect it may be solved fairly soon. I hope the winner will help me write the next challenge which will be a bit harder. 1 $39$ 7$$5 D #VI# A##D 0KW3 W71A 0PN5 6S6F 9P9Y 0B3G 8.7E 65E0 BVXJ 0YQV AIKI 1C20 $840 91T8 0KS7 XQXR 78D6 BVK1 K8DO 03L8 KSV2 .2SB 0YA1 3KJW WR22 2$$5 CQ36 2ISU MM5B QIV2 YJVE P8C0 #GYM 9KC0 7D18 A5X. F449 .EG. O31F AM58 41GN 13Y9 Q4IL QMB9 FJ3N GYM# VQ26 TJ0K DF.M .8CV STAK WMWF UIZP WM0K U90Z 5OT4 .D8L GL You must be a customer to be eligible for cash prize. The most powerful of our Enigma Series of Encoders.