Working Tektronix 5103N Analogue Oscilloscope with 2 * 5A18N & 1* 5B13N Plug-ins
2 off: 5A18N - dual channel 2MHz - full featured inputs. One is original. which I installed because the original one was in bad condition. This is a 2MHz analogue scope dating from about 1976. It has the legendary Tektronix UI.