ML422B
The ML422B Selective Level Meter covers a frequency range from 50Hz to 30MHz; Level measurement range from -120 to +30 dBm; accuracy of ?0.1 dB; 48kHz Group Filter; True RMS (more)...

ML422B/31
ML422B/31 Selective Level Meter

MS330A
SELECTIVE LEVEL METER, FREQUENCY SYN. LOCAL OSCILLATOR. FREQUENCY 200 HZ TO 6.4 MHZ, RANGE -120 DB TO + 30 DBM WITH 2 BANDWIDTHS OF 3.1 KHZ AND 70 HZ.

ML422B/11/21
The ML422B Selective Level Meter covers a frequency range from 50Hz to 30MHz; Level measurement range from -120 to +30 dBm; accuracy of ?0.1 dB; 48kHz Group Filter; True RMS (more)...