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Proof Plane
Consist of a brass disc 25mm diameter mounted coaxially on an ebonite rod.
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Proof Sphere
Consist of a brass sphere 25mm diameter mounted coaxially on an ebonite rod.
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Accessories Set, Van De Graaff
The set comprises of:
» Faraday's Pail
» Perspex cylinder with suspended metallised sphere
» Head of hair
» Point discharge
» Electric whirl
» Neon Bulb
» Electric Tester
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Potentiometer
Consisting of a wooden base with 1m high resistance wire connected to plated brass plates. The plates are fitted with 4mm socket terminals. Wooden scale graduated 0- 100cmx1mm. Complete with knife edge jockey.
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Wheatstone Bridge
With 4 gaps, nickel plated brass plates and connecting pieces, with 4mm socket terminals, fitted on wooden base. Wooden scale graduated 0-100cmx1mm. Complete with knife edge jockey.
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Jockey
With plated brass knife edge mounted in insulated handle 80mm long. Provided with a plated brass 4mm socket terminal for connection. Overall length 110mm.
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Wheatstone Bridge, Dial Type
Consists of four dials in series of ranges X1, X10, X100, X1000 having total resistance 11110 ohms. Two ratio dials having resistance of 1, 10, 100, 1000 are provided. Terminals for connecting galvanometer and battery with press keys are also provided. The unknown resistance is connected between two terminals marked ?X?. The instrument can also be used as four dial decade resistance box and two terminals for connecting it in series are also provided.
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Resistance Substitution Box
A 12 position rotary switch selects values, 33?, 100?, 330?, 1k?, 3.3k?, 10k?, 33k?, 100k?, 330k?, 1M?, 3.3M?, 10M?. Any other range can also be provided.
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Resistors, Mounted
Consist of seven carbon resistance of values 1ohm, 4.7ohm, 10ohm, 100ohm, 1000ohm, 10kohm, 100kohm mounted on an acrylic board. Each resistor is provided with a pair of 4mm socket connections.
Any other range can also be provided.
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Resistance Unit
In bakelite case with 4mm socket terminals, non-inductively wound coil. Accuracy 1%.
| -01 |
Resistance 0.2 ohms |
| -02 |
Resistance 0.5 ohms |
| -03 |
Resistance 1 ohms |
| -04 |
Resistance 2 ohms |
| -05 |
Resistance 5 ohms |
| -06 |
Resistance 10 ohms |
| -07 |
Resistance 20 ohms |
| -08 |
Resistance 50 ohms |
| -09 |
Resistance 100 ohms |
| -10 |
Resistance 200 ohms |
| -11 |
Resistance 500 ohms |
| -12 |
Resistance 1000 ohms |
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Resistance Box, Plug Type
Split brass contact blocks hold precision cut, interchangeable plugs having moulded black bakelite tops, in polished wooden box with bakelite top. Coils of double silk covered manganin wire and provided with two 4mm socket terminals.
Accuracy ±0.1%.
| -01 |
Range 0.1-1 ohm |
| -02 |
Range 0.1-5 ohm |
| -03 |
Range 0.1-10 ohm |
| -04 |
Range 0.1-50 ohm |
| -05 |
Range 1-50 ohm |
| -06 |
Range 1-100 ohm |
| -07 |
Range 1-500 ohm |
| -08 |
Range 1-1000 ohm |
| -09 |
Range 1-5000 ohm |
| -10 |
Range 1-10000 ohm |
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Resistance Box, Decade Type
Enclosed in an an aluminium case, this unit has coils of double silk covered manganin wire, wound non-inductively so the box is suitable for both A.C. And D.C. use. Provided with two 4mm socket terminals for connections. Accuracy ±0.1%.
No. of Dials Steps ohms Total ohms
| -01 |
One |
0.1 1 |
| -02 |
One |
1 10 |
| -03 |
One |
10 100 |
| -04 |
One |
100 1000 |
| -05 |
One |
1000 10000 |
| -06 |
Two |
0.1,1 11 |
| -07 |
Two |
1,10 110 |
| -08 |
Two |
10,100 1100 |
| -09 |
Two |
100,1000 11000 |
| -10 |
Three |
0.1,1,10 111 |
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Three |
1,10,100 1110 |
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Three |
10,100,1000 11100 |
| -13 |
Four |
0.1,1,10,100 1111 |
| -14 |
Four |
1,10,100,1000 11110 |
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Resistance Box, Decade Type
Same as RE5057, but enclosed in a wooden box with a bakelite top.
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Components On Base
Designed to study various electronic components. Comprises of an acrylic base mounted with one each of LED, Germanium Diode, Zener Diode, PNP Transistor, NPN Transistor, Electrolytic Capacitor and Resistance. Provided with 4mm socket connections.
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Rheostat, Closed Type
Same as above, but mounted on metal frame with perforated cover.
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