Analog Indicators are mostly meters that indicate the value of the measurand on a calibrated scale by means of a pointer. The permanent magnet moving coil indicators are used as end devices in instrumentation systems for the indication of the amplitude of the primary measurand. The scale calibration may not always be linear and hence accuracy in reading becomes poorer in portions of the scale where it is cramped.
Analog Modem Routers are equipped with two external modem ports (RS 232 Serial) that allow connecting two modems/ISDN to the same ISP or two different ISP's.