The CV2272 is a small oscilloscope tube with the final anode brought out to a side terminal. The prototype was the VCRX212.
The final anode function is post deflection accelerator that gives a bright trace while maintaining the deflection plate sensitivity of earlier tubes.
The KB/Z identifies this valve as being made to specification K1001 or K1006, the B denotes qualification by a UK authority and the Z identifies the maker as MO Valve Company, Hammersmith.
The electron gun on the right followed by the Y plates and the X plates partly hidden by the colloidal graphite final anode coating the inside of the glass.
The B9G base pins. The electrode geometry is maintained by stacking on ceramic tubes.
A closer view. Note the wires passing through the support ceramic tubes to the base.
The PDA connector.
The domed end window with phosphor coating.
The end window envelope is 39 mm in diameter, and excluding the B9G base pins is 164 mm tall.
References: Data-sheet. Type CV2272 was first introduced in 1955. See also1955 adverts.
