With built-in dual stabilised power supply, workable on 230 volts A.C., fitted with PNP transistor or AC 128 on front panel. Different electrodes of transistor, power supply output and meter connections are brought out on panel with separate terminals
A. with 3 meters
B. with 4 meters

With built-in stabilised power supply, workable on 230 volts A.C., fitted with FET FW 10 on front panel. Different electrodes of transistor, power supply, output and meter connections are brought out on the panel , with 3 meters

With built-in dual stabilised power supply workable on 230 volts A.C. fitted with UJT 2N 2646 on front panel. Different electrodes of UJT, power supply, output and meter connections are brought out on the panel , with 4 meters

Triple range, fitted with deluxe meter with transparent cover. Input impedence 11 megohms
A. as AC voltmeter : 7 ranges, 0-1.5, 5, 15, 50, 150, 500 and 1500 volts FSD accuracy ± 5%
B. as DC voltmeter : 7 ranges, 0-1.5, 5, 15, 50, 150, 500 and 1500 volts FSD accuracy ± 3%
C. as Ohm Meter : 7 ranges 0-1000, 10000, 100000 ohms and 1, 10, 100 and 1000 megohms FSD accuracy ± 3 %

Complete unit to be used with any Oscilioscope showing hystersis curve. Complete with AC source, specified load unit and primary-secondary type solenoid