KT-6 Television Camera
This camera is surprisingly similar to the RCA TK10/30 or Marconi MkI. The knob on the side will be the focus control which racked the tube and scanning yoke back and forwards to the focus point, the lenses staying still. A large handle on the back of the camera rotated the 4 station turret. I expect it used the 3 inch Image Orthicon tube.
This photo was taken by "Steve9119"
at the Polytechnic Museum Russia.