Tektronix AM 503 Current Probe Amplifier Module used vintage

Tektronix AM503 Current Probe Amplifier Plug-Ins (Lot of 2)

Tektronix AM 503 Current Probe Amplifier Plug-In for TM500 System

^^ Tektronix AM503 AM 503 Current Probe Amplifier PLUG IN (WSG88)

Tektronix Model AM 503 Current Probe Amplifier with PM1024A Cable

Tektronix AM503 (B032064) Current Meter #8b

Tektronix AM503 Digital Current Probe Amplifier Plugin w/ TM 501 Power Module

Tektronix AM 503 Current Probe Amplifier