The HS252 is a small camera tube.
The faceplate and target connections.
The cathode and electron lens. Deflection of the beam across the target would be by an external deflection yoke.
A general view.
The end window envelope is 26 mm in diameter, and excluding the base pins is 120 mm tall.
Updated June 21, 2013. shape:end.window construction:all.glass type:camera.tube base: pins:8 pin: