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Suitable for industrial Kelvin Double Bridge and Senior Kelvin Double Bridge. Galvanometer Resistance 125 ohms Nominal, Sensitivity 15 mm. scale division per micro amp., time period 2 second, critical damping resistance 1000 ohms and working voltageis 230 volts. A.C. 50Hz
Used for measurement of small quantities of electrical charge. Leveling Screws for balancing the coil. Coil with mirror suspended between long suspension at the upper end and a spring at lower end. Clamping arrangement for transportation. Consistent sensitivity over a large period. Strip provided for making it a periodic.
The plastic ring or bobbin 162.5 mm overall diameter would with three coil of insulated copper wire with 2, 50 and 500 turns mounted on Bakelite moulded platform fitted with 4 terminals, rotating on a tripod non magnetic metal base, supported by leveling screws. Complete with compass box (Magnetometer) mounted at the centre of the ring