... speed,level 4/5/6 digit display. Digital RPM Tacho meter/ Techometer (FA) Usage: Applications with control ... , Digital Adjustor,thermocouple (TC and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, ... They are widely used in industrial control and measurement field, such as machinery, electrical cabinet, power sub- ...