HP Agilent 54659B Oscilloscope Measurement Interface Module

HP 54659B RS-232-C / Parallel Measurement / Storage Module

Vintage HP Hewlet Packard Model 525B Frequency Converter Unit 100-220 MC

Used H/P Hewlett Packard 10525T Logic Probe

Hewlett Packard 8801A Plotter Recorder Low Level Preamp

(PARTS!) Hewlett-Packard HP Model 11517A 12.4-40GC Mixer Only (UNTESTED)

HP Hewlett Packard 03392-60900 RS-232 Computer DCE Cable 3393A DB-25 to 12-pin

Keysight HP Agilent Hewlett-Packard 11852B Option 004 OPT 4 - UNTESTED