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Schematics and manuals for vintage test equipment
VT voltmeter
Brüel & Kjaer 2409, 2416
Philips GM 6009
Tech PV 58
Grundig
RV 11
Labor Wennebostel
RV 54
Rohde & Schwarz
Laru - Inductance meter
FTZ - Distortion meter schematic
Tube tester
Superior Instruments TV11 - short
Superior TV11 - manual
RPG 70 schematic