T-12-C Compactron: 6LF6, 6LQ6, 6JB6, and other 12-pin Compactron types. Vector Test Socket Adapter Pair – T-12-C (Compactron) & T-9R-C (Novar) – Verified. A matched pair of Vector tube socket test adapters for servicing and testing Compactron and Novar tubes.