The LGL Group, Inc., together with its subsidiaries, engages in the design, manufacture, and marketing of time and frequency instruments in the United States and internationally. It operates in two segments, Electronic Instruments and Merchant Investment. The company offers frequency and time reference standards; radio frequency (RF), digital, and optical time code distribution amplifiers; network time protocol (NTP) servers; and redundancy auto switches. It also provides time and frequency instrumentation, including frequency standards, global positioning system, global navigation system frequency, time standards, and time code generators; and ancillary products.