Lamp voltmeter VK7-3.
Instruments for adjusting and controlling the PTA.The lamp voltmeter "VK7-3" (A4-M2) has been produced since 1963. It is a complete analogue of the "A4-M2" volt-ohm meter and is also designed to measure direct and alternating voltages, direct current resistance, capacitance and inductance. Voltommeter "A4-M2" is available on the site.
