When I got into RC, many moons back, my first radio was a Heathkit 4 Ch. Single Stick.
The Stick design came from Kraft, as did many components on the radio. Actually the Stick was a hollow shaft with wirng coming up inside and running to a Potentiometer inside a knob mounted atop the stick. So I really had Elevator on the back & forth motion, Ailerons on the side to side motions and Rudder by turning the top mounted knob. It was a blast to fly after you finally mastered the trick of it.

The TX was just a slim case that rested in the pilot's left hand, with the middle finger of the left hand working the throttle lever that stuck out of the side of the case...much like a Trim lever did.

The following summer I had to learn to fly two stick transmitters to be able to teach the new guys to fly, as most all of them showed up with a new Airtronic 2 stick TX! Made me love my single sticker more. Thanks to Phil K.