RESISTANCE BOX PLUG TYPE (CONSTANT COIL) ( CAT NO . 915 )
Precision quality consisting of 12mm (approx. 1/2”) thick rectangular brass block, non-inductive, double covered Eureka Constantan wire is wound on bakelite spool, enclosed in a teakwood box. Accuracy ±0.1% of all plugs are interchangeable.
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P.O.Box/ Resistance Box/ Rheostat
POST OFFICE BOX 3 RATIO CONSTANTAN COIL ( CAT NO. 908 )
Gambrel type, golden lacquered, having 3 ratio coils of 1000, 100 and 10 ohms, Rheostat arms 1-5000 ohms.
Two tapping keys with silver contact provided for the battery and galvanometer in the teakwood case, Consisting of 12mm thick rectangular brass block, coils are wound with constantan coil having an accuracy with +0.1%.
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P.O.Box/ Resistance Box/ Rheostat
PLUG KEYS
PLUG KEY 1 WAY: (CAT NO. 1013 )
WIth Brass blocks of 10mm rectangular in shape with all brass terminals and screws.
PLUG KEY 2 WAY: (CAT NO. 1013 )
Thick brass block of 10 mm fitted on heavy bakelite base provided with all brass terminals and screws.
PLUG KEY 3 WAY: (CAT NO. 1013 )
Same as above but with a brass block of 10 mm thick mounted on a heavy bakelite base provided with all brass terminals.
PLUG KEY 4 WAY: (CAT NO. 1015 )
4-way circular Thick brass block with brass nuts and screws are mounted on a thick bakelite plate.
REVERSING KEY: ( CAT NO. 1019 )
m.i.p type with a handle fitted on a thick bakelite base.
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