This is the next generation of our Enigma machines. More powerful with 37 tooth gears that contain the alphabet, 10 number digits and a decimal point (or period). The machine can be used to encode your own secret messages! Send and receive secret messages to anyone who has a machine. Hardwood construction with gears cut from ¼” thick wood. All letters and text are deeply laser engraved into the wood. Base is USA Hickory. The gears turn on alloy steel pins. © 2016 Creative Crafthouse Made in Hudson, FL, USA A summary of how to use the machine is on a youtube video. Amazon will not allow the link here, but you can find if you seach youtube for Enigma 37 machine. I recommend you watch the video to make it clear. It’s a very fast and easy process once you learn how to do it.