... display. Digital RPM Tacho meter/ Techometer (FA) Usage: Applications with control equipments for frequency / tacho / line-speed / flow measurement,such as pulse ... Adjustor,thermocouple (TC and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, flowmeter,Timer,Timer Relay, Solid ...