Test Equipment

There is a big business in selling originals or copies of test equipment manuals, and there are very few on-line manuals. Granted, manuals for recent complex equipment can be huge, but let's get some more of the older manuals on-line!

Ballantine 300 AC Voltmeter manual w/schematic
Ballantine 300D AC Voltmeter manual w/schematic
Brüel & Kjaer 2409/2416 VTVM schematic
B&K 747 tube tester manual w/schematic
B&W 600 grid-dip meter manual w/schematic
Century Electronics FC-2 Tube tester manual and settings (Excel file) (thanks Alfred Baumgartner!)
EICO 147a signal tracer manual w/schematic
EICO 232-239 VTVM manual w/schematic
EICO 250 AF VTVM schematic 
EICO 320-322 RF signal generator manual w/schematic
EICO 315 RF/AF signal generator schematic 
EICO 324 RF signal generator manual w/schematic
EICO 377 AF sine/square wave generator manual w/schematic
EICO 379 AF sine/square wave generator manual w/schematic
EICO 488 Electronic Switch schematic 
EICO 625 tube tester manual w/schematic
EICO 677 tube tester information, manual w/schematic
EICO 680 transistor tester manual w/schematic
EICO 710 grid-dip meter schematic
EICO 950B impedance bridge manual w/schematic
EICO 1050 Battery Eliminator schematic 
E-H 201C Electrometer schematic
E-H 215 RL Electrometer schematic
EMC 107A VTVM schematic 
EMC Model 205 Tube Tester manual
Grundig RV 11 VTVM schematic
Heathkit AV-1 AC voltmeter schematic
Heathkit C-3 Condensor checker schematic
Heath EU* Malmstadt-Enke Scientific Lab Equipment - see below
Heathkit G-5 signal generator schematic
Heathkit HM-10A "Tunnel Dipper" schematic
Heathkit IG-72 sine wave audio oscillator schematic
Heathkit IM-10 VTVM schematic
Heathkit IM-11 VTVM schematic
Heathkit IM-18 VTVM schematic (similar to most other Heath VTVMs)
Heathkit IM-21 AC VTVM schematic
Heathkit IM-4190 bidirectional wattmeter schematic
Heathkit IO-12 oscilloscope schematic
Heathkit IP-17 0-400V regulated power supply schematic
Heathkit IP-27 LV regulated power supply schematic
Heathkit IT-28 capacitor checker schematic
Heathkit PK-3 RF probe schematic
Heathkit RC-1 Radiation Counter partial manual
Hewlett-Packard 200CD AF oscillator schematic (early model with 6SH7/6AU5GT)
Hewlett-Packard 205AG manual
Hewlett-Packard 206A AF oscillator schematic 
Hewlett-Packard 339A Distortion Analyzer manual
Hewlett-Packard 400 AF VTVM manual w/schematic
Hewlett-Packard 410B RF VTVM schematic
Hewlett-Packard 606A RF generator manual w/schematic
Hewlett-Packard 711A Power Supply manual
Hewlett-Packard 3200B VHF oscillator operating and service manual
Hickock 6000(A) tube tester manual
Jackson Model 640 Test Oscillator manual w/schematic
Knight-Kit K600 Tube Tester schematic
Millen 90501 Secondary frequency standard schematic
Millen 90651 Grid-dip meter manual w/schematic
Millen 90651A grid-dip meter schematic
Millen 90652 solid-state dipper schematic
Millen 90662A grid-dip meter schematic
Millen 90903 oscilloscope (old version) schematic
Millen 90903 oscilloscope (new version) schematic
Millen 90912 instrumentation oscilloscope schematic
Nida Minilab 400 multi-purpose trainer information page
Palace TE-16A transitorized Test Oscillator manual w/schematic 
Philips GM 3150 oscilloscope pictures, brochure, schematic
Philips GM 3152 oscilloscope pictures, brochure, schematic
Philips GM 5654 oscilloscope manual w/schematic (nl)
Philips GM 5655/01 oscilloscope manual w/schematic (nl)
Philips GM 655/03 oscilloscope manual w/schematic (nl)
Philips GM 6012 AF Millivoltmeter manual w/schematic
Philips GM 7633/01 "Cartomatic" III tube tester directions, schematic, card example
Philips PW 4029 regulated power supply schematic
RCA WA-44C AF sine/square wave generator manual w/schematic
RCA WV-510A "Master VoltOhmyst" manual w/schematic
RCA WV-98A "Senior VoltOhmyst" manual w/schematic
RCA WV-98C "Senior VoltOhmyst" manual w/schematic
Rohde & Schwarz LARU Inductance meter schematic
Rohde & Schwarz FTZ distortion meter schematic
Sencore Mighty Mite V - Model TC 142 tube tester manual w/schematic
Simpson 260-6P VOM manual w/schematic
Sprague TO-5 Tel-Ohmike capacitor analyzer manual w/schematic
Sprague TO-6A Tel-Ohmike capacitor analyzer manual w/schematic
Supreme Models 500, 505 & 585 DeLuxe Series Tube Testers manual
Sylvania 145 Audio Oscillator schematic
Tektronix - see below
Tektronix 535A oscilloscope schematic
Triplett 625-7 VOM schematic
Triplett 630-A VOM manual w/schematic
U.S. Navy TV-3/U Tube Tester manual
Victoreen 570 r-meter manual w/schematic
Waterman S-10-A "Pocketscope" oscilloscope schematic
Weston 980 Mark II VOM specs and schematic
Weston 981 Type I tube tester manual w/schematic
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Heath Malmstadt-Enke Instrumentation Laboratory equipment (Thanks to Kevin Hilbiber of the House of Science, Seattle, Washington, USA for this information):

Heath EU-14A "Special Experimental Parts" specs and schematic
Heath EUW-16 Voltage Reference Source specs and schematic
Heath EUW-17 Transistor Power Supply specs and schematic
Heath EUW-19A Operational Amplifier System specs and schematic
Heath EUW-20A Servo-Recorder specs and schematic
Heath EUW-24 VTVM specs and schematic
Heath EUW-25 DC Oscilloscope specs and schematic
Heath EUP-26 VOM specs and schematic
Heath EUW-27 Sine-Square Wave Generator specs and schematic

Recommended Archive Sites:

Nostalgia Air - lots of schematics for early radios, but some test equipment is there, too.
Equipment Manual Directory - a vast collection of manuals for mostly ham and some test equipment.
Bill & Stan's Tektronix Resource Site - lots of Tektronix info.