The Tektronix 1420 is a Television Vectorscope for the NTSC video standard.
Produced from 1975 to (?)
The 1421 is for PAL and the 1422 is for PAL-M.
Tek 1420 front
Tek 1420 rear
Tek 1420 (right) with 1710 (left) in 19" rack
Tek 1420
