The LGL Group, Inc. is a holding company. The Company, through its subsidiaries, engaged in the manufacturing and marketing of electronic components used to control the frequency or timing of signals in electronic circuits. The Company operates through its principal subsidiary, M-tron Industries, Inc., which includes the operations of M-tron Industries, Ltd. (Mtron) and Piezo Technology, Inc. (PTI) (collectively, MtronPTI). MtronPTI designs, markets and manufactures frequency and spectrum control products. These component-level devices are used in infrastructure equipment for the telecommunications and network equipment industries, as well as in electronic systems for applications in defense, aerospace, earth-orbiting satellites, down-hole drilling, medical devices, instrumentation, industrial devices and global positioning systems.