The RPM Test Bench Type SE-TS-AVRO TG/TM is a multi-system test bench for testing, troubleshooting, repair and calibration of tachometer indicators and tacho generators across four aircraft types — AVRO, Canberra, Kiran MK-I and Kiran MK-II — in both % RPM and RPM. The supply scope includes a Generator CPU sub-system, a Tacho Meter CPU sub-system and a Servomotor and utility sub-system. Built-in measuring instruments allow phase resistances, current drawn, loading by fixed or variable resistance banks and voltage output of the tacho generator to be measured.