123B/124B/125B People Guide The Meter Recorder would make the Exam Instrument work as a paperless recorder that collects a series of parameter measurements after some time and displays the result as a graph or perhaps a development-line on monitor. This can be most beneficial to..Còn   là t?i gi? quay s? m? th??ng X? s? Mi?n B?c m? th??ng vào 1