Antiques

2-range Pot 0-16mV and 16-64mV with Galvanometer, battery (probably corroded if inside) operated in wooden case. Would look beautiful with professional TLC applied to metal, bakelite and wood. Sold As Is.

Vacuum tube volt meter. (VTVM). A wide-band RMS voltmeter and amplifier. It is capable of reading AC from 1 millivolt full scale to 300 volts full scale. It has wideband response from below 10 hertz to a specified working accuracy limit of 4 Megahertz. As an amplifier, it has a cathode follower output for monitoring, regardless of input switch setting, at about 0.15 volts at 50 ohms impedance.