- GenRad 1840-A Output Power Meter
- Power output of oscillators, amplifiers, preamplifiers, transformers, transducers, and low-frequency lines.
- Output impedance, by adjustment of the load to yield maximum power indication.
- Frequency-response characteristics of amplifiers, transformers, and other audio-frequency devices.
- GenRad 1982 Precision Sound Level Meter
- a versatile, all-purpose instrument precision sound-level meter peak and impulse noise meter octave-band analyzer
- ideal for OSHA and a broad variety of noise measurements
- digital and analog displays for error-free reading
- compact and lightweight (3 lb) for easy handling
- approved by MSHA and NIOSH