The E182CC is a special quality computer grade double triode. The design is optimised for maintaining emission after long periods under cut-off conditions.
The long triode sections with heat radiators on the copper supports of the control grids.
One anode face view.
The thin glass tube envelope is 20 mm in diameter and the length excluding the B9A base pins, is 57 mm.
Reference: Data-sheet. Type E182CC was first introduced in 1958. See also1958 adverts.