MIL-C-24523, MILITARY SPECIFICATION: CHRONOMETER, QUARTZ CRYSTAL, BATTERY-POWERED (10 SEP 1975)

MIL-C-24523, MILITARY SPECIFICATION: CHRONOMETER, QUARTZ CRYSTAL, BATTERY-POWERED (10 SEP 1975)., This specification covers battery-powered, quartz crystal chronometers having solid-state circuitry and intended primarily as master time-measuring circuits.