VTVM (Vacuum Tube Volt Meter).
Basic tool for technicians repairing equipment using vacuum tubes, where a high impedance voltmeter was required.
Used by the IDF during the Six Day War (1967) and the War of Attrition (1967-1970).
Measurements: DC and AC voltage up to 1,500 Volts; resistance up to 1,000 Meg-Ohms; AC response: 3 MHz; DC input resistance: 11 Meg-Ohms; measurement accuracy: 3%; power: 220 Volts AC.
Manufactured by RCA, USA. Designated WV-98C.
