HP 1801A Dual Channel Vertical Amplifier Operating And Service Manual 1976

HP 1806A Dual Differential Vertical Amplifier Operating Service Manual 1971

HP 1801A Dual Channel Vertical Amplifier Operating And Service Manual 1974

HP 1801A Dual Channel Vertical Amplifier Operating and Service Manual 1968

HP 8445A Automatic Preselector Operating and Service Manual 1971

HP 1804A Four Channel Vertical Amplifier Operating And Service Manual 1971

Marconi 6587 Levelling Amplifier Instruction Manual 1971

Tektronix 5A18N Dual-Trace Amplifier Instruction Manual 1971