This is a General Radio type 1142-A Frequency Meter and Discriminator. This is a nice vintage unit with a large panel meter and vacuum tubes. I powered this on and after a very short time a resistor started to overheat. I immediately removed power. This may have been due to a capacitor going bad due to age. This will need to be repaired. There is a chip on the back right top of the meter case next to the "Direct Cal" control