123B/124B/125B End users Guide The Meter Recorder makes the Take a look at Device work as a paperless recorder that collects a number of parameter measurements over time and reveals the result as a graph or simply a pattern-line on monitor. This can be most handy to..Theo c?u tuy?n th? Nguy?n M?nh D?ng, Vi?t Nam c?n chia tr?n ??u thành ba giai ?o?