HP 202C/CR Low Frequency Oscillator Operating and Service Manual 1966

HP 11721-90002 1980 11721A Frequency Doubler Operating & Service Manual.

HP Dymec DY 2211A/B Voltage to Frequency Converters Service Manual

HP 04275-90012 Model 4275A Multi-Frequency LCR Meter Service Manual.

HP 5340A Frequency Counter Operating and Service Manual 05340-90021 Sept. 1975

HP 606A High-Frequency Signal Generator Illustrated Parts Identification 1964

HP 5254A Frequency Converter Operating & Service Manual 05254-9007

HP Agilent 05102-9028 1966 Model 5102A Frequency Synthesizer Service Manual.