If the photograph is clicked, it grows.

HP 437B+8482H Power Meter+100kHz-4.2GHz Power Senser
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mal245




8482H;
Accurate average power measurements over -10 to +35 dBm
Frequency range 100 kHz to 4.2 GHz
Thermocouple power sensing element
437B;
res0.001dB W/dBm ref% acc0.7%
50MHz 1.00mW SWR1.05 N(f) Autozero,Autocal Memory 10sensordata
HP-IB 8W 88H212W273D 2.6Kg