Callendar & Griffiths Bridge Senior
Model ETK0017
A set of terminals for Ballistic Galv condenser and Plug key in series with 20-M-OHM resistance. Two way key is provided for charging the condenser and discharging through resistance coil after known interval. Tap Key Provided on the panel for use of Ballistic Galv. FINE slow motion is provided by a lever , can be read by vernier attached. The coils are married in units 10, 20, 40, 80, 100, 320, 640 ,1280. Terminals provided for Galv , Battery, Mercury cups filled half with mercury and connectors serve to short the resistance when depressed in Mercury. It is an improvement over the potentiometer. The 50cm long slides wire of 1ohm resistance is calibrated into 100 equal parts. 14 coils are arranged in series in dial from each being of 1 ohm resistance.
High Resistance by Leakage of condenser Method :-
• Comprising a wooden Board for proper setting of Components
• Special charge, discharge key fitted with restless points
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