Scientific apparatus and instruments, namely, inertial sensors, accelerometers, gravimeters, gyroscopes, Lasers measuring systems; nautical apparatus and instruments, namely, inertial sensors, accelerometers, gravimeters, gyroscopes, Lasers measuring systems; surveying apparatus and instruments; weighing apparatus and instruments; gravity, quantity and time measuring apparatus and instruments, namely devices that measure gravitational force, gravimeter for geophysical measurements; teaching a...