Positioning, Navigation and Timing apparatus composed of GNSS (Global navigation satellite system) receiver, inertial measurement apparatus, timing oscillators; Positioning, navigation and timing apparatus and instruments namely, frequency control products, namely, crystal oscillators, atomic oscillators, synthesizers, and filters; frequency generators, atomic clocks, time displays; timing and synchronization equipment, namely, GPS-clocks and time servers; frequency and time distribution devices, namely, clock and frequency signal amplifiers and switches and wireless time distribution devices; computer timing boards; time and position receivers; radiofrequency transponders, radiofrequency beacons; location products, namely, global positioning systems, wide-area positioning systems, local area positioning systems, inertial sensors, position and attitude sensors, satellite signal generators; data processing equipment and computers; Electronic units for time and frequency measuring, comparing, display, distribution and calibration; Network servers; monitoring instruments; precision measuring apparatus; timing apparatus; electronic timing control apparatus; time measuring instruments (not including clocks and watches); time regulating apparatus; time registering apparatus; timecoding apparatus; time recording apparatus; frequency modulators and indicators; high frequency apparatus.