TWO of the most essential measurements for any high-frequency system are power and frequency, Normally, the measurements are handled died by two separate instruments: a power meter and a frequency counter. With the Hand-Held Power Meter from Giga-tronics, Inc. (San Ramon, CA), however, not only can engineers perform both key measurements with a single Instrument, they can do so under battery operation. In addition, they can achieve high measurement accuracy over a wide range of temperatures.