M-94 and Jefferson Wheel Cipher

I researched the United States Army M-94 cipher device for my final project and one thing really stood out to me.  The device was widely used during the years 1921 to 1942 but in fact, the device was actually invented over a hundred years before.  Thomas Jefferson actually invented the device in 1795 but it wasn't used until 1921.  I find it amazing that Jefferson was able to invent the device.  It just shows how much of a genius he really was. He created something that was very far ahead of his time.