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NICHROME WIRE, BARE (0422)
A nickel-chromium iron alloy especially suitable for high temperature applications such as heating elements, rheostats etc.
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WATER CIRCUIT BOARD (0423)
To demonstrate the principle of flow of electricity by analogy. Comprises an analogous circuit made of transparent plastic tubing connected to a low voltage electric pump operating on 6-12V DC for circulating water through the circuit, mounted on a large sheet metal board through spring clips. The circuit has two glass tubes of different bores, connected in parallel across the circuit and represents resistances. Across the resistances is connected a detachable manometer to show the pressure drop across the tubes indicating potential difference. Following the resistances, the tube discharges into a funnel for circulation through the circuit. 4mm sockets provided for power input to the pump. Rate of flow of water through the circuit represents current through the circuit and can be controlled by varying the input to the electric pump. Hoffman's Clips provided for disconnecting either of the two resistances or manometer, when needed.
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WORCESTER CIRCUIT BOARD KIT (0424)
The kit consists of baseboard, terminals, set of metal connection pillars and a number of clip-on connection strips and accessories units, enabling a variety of circuits to be constructed quickly. Phosphor bronze connection strips are so designed that when flexed a little, they are easily slipped over the pegs on baseboard, where there natural spring holds them in position and ensures good electrical contact. The kit includes following components. Flash Lamp Bulbs 18 nos, Plain Connectors 12 nos, Connectors with Lamp Holders 9 nos, Connector with Rheostat 1 nos, Rectifier 1 nos, Resistor 1 nos, Flexible Leads with 4mm plugs and crocodile clips 2 nos, Flexible Leads with Crocodile Clips 2 nos, Crocodile Clips 2 nos, Mounted Bell Pushes 2 nos, Soft Iron Nails 50mm 2 nos, 1 Length of Bare Copper Wire 20SWG, 1 Length of Bare Eureka Wire, 34SWG, 1 Length of Plastic Covered flexible wire, Circular Hardboard Disc, Drilled 1 nos, Pencil Leads 4 nos, Copper Foil 1 pc., Steel Wool Supplied without cells 1 pc. The Worcester Circuit Board Kit has been so comprehensively designed that no catalog specification or illustration can properly indicate the complete scope of the kit. Listed below are some of the topics that can be studied on an individual basis. (1)Understanding basic electrical circuit elements and their applications (2) Making simple electrical circuits. (3) Simple series and parallel circuits. (4) Conversion of electrical energy to light energy and heat energy. (5) Heating Effects of current (6) Magnetic effects of current (7) Current Balance. (8) Effects of a resistor and a rectifier (9) Using simple variable resistor as a potential divider (10) Testing Fuses (11) Comparison of resistance wires. (12) Conduction in liquids Simple CeIl. (13) Electroplating etc.More experiments and demonstration can be performed with the kit and are left to the ingenuity of teachers and students for further exploration.
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CARBON ARC LAMP (0425)
Mounted on wooden base to explain working of arc lamp operates on 12 volts AC/ DC.
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MORSE KEY (0426)
To demonstrate the functioning of telegraphic communication. Tapping of the key sends signal to the sounder. On rectangular wooden base with two terminals and pivoted contact arm with adjustable spring, all fittings are chrome plated. 4mm socket terminal provided for connections.
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MORSE SOUNDER (0427)
Receives communication from Morse key and converts into audible signal for decoding. On rectangular wooden base with electromagnet and pivoted arm with adjustable screws, all fitting are chrome plated. 4mm socket terminal provided for connections
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MORSE KEY AND SOUNDER COMBINED (0428)
The complete unit, when connected to a similar unit provides complete two way communication in the form of Morse codes. Provided with two pair of terminals - one pair marked '+' and '-' for battery connections and other marked 'L l' and 'L2' for connection to similar terminal on another unit. Mounted on polished wooden base.
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TELEGRAPH SET, TABLE TYPE (0429)
Set of TWO units. Each unit is fitted with one Morse key one sounder and ON/OFF switch for battery with four terminals. Each unit is works on 4-6V DC.
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TELEGRAPH SET, LECTURE PATTERN (0430)
For demonstration of telegraphic communication to a group of students. Comprises a set of two individual complete working model, each unit is mounted on wooden polished vertical stand, all connections are clearly visible to explain the principle of telegraph. Each unit is workable on 4-6 volts DC.
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TELEPHONE TRANSMITIER & RECEIVER COMBINED (0431)
Showing clearly all components and connections working demonstration model of telephonic communication.
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BELL DEMONSTRATION MODEL, ECONOMICAL (0432)
All the components of an electric bell are mounted on a large panel for easy demonstration to the group of students. Provides complete dissected view with all components and wiring clearly visible with large sized parts. Operates on 3-4 volts DC. Shows the working of a simple electric bell.
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MOVING COIL METERS (0433)
For DC measurements are designed to meet every need of schools, colleges and technical institutions, All meters are housed in moulded dust proof cases with provision for zero adjustment. Ranges available in both center zero as well as left zero. The meters are available in following sizes and shapes.
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PANEL METERS (0434)
A Round: Unbreakable, moulded, ABS Plastic Black Case; Accuracy ?2.0 FSD; Scale Length about 50mm with knife edge pointer, with or without anti-parallax mirror scale; Overall Size about BOmm round; flush type mounting.
B Square: Unbreakable, moulded, ABS Plastic Black Case; Accuracy ?2.0 FSD; Scale Length about 50mm with knife edge pointer, with or without anti-parallax mirror scale; Overall Size about 65 x 65mm square; rear type mounting.
C Square: Unbreakable, moulded, ABS Plastic Black Case with clear transparent front window; Accuracy ?2.0 FSD; Scale Length about 60mm with knife edge pointer, with or without anti-parallax mirror scale; Overall Size about 72x72mm square; rear type mounting.
D Square: Unbreakable, moulded, ABS Plastic Black Case with clear transparent front window; Accuracy ?2.0 FSD; Scale Length about 60mm with knife edge pointer, with or without anti-parallax mirror scale; Overall Size about 72x72mm square; flush type mounting.
E Rectangular: Unbreakable, moulded, ABS Plastic Black Case with clear transparent front window; Accuracy ?2.0 FSD; Scale Length about B5mm with knife edge pointer, with or without anti-parallax mirror scale; Overall Size about BOx 1 OOmm rectangular; flush type mounting.
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METERS ON DESK STAND (0435)
All meters provided with 4mm colour coded terminals for connections. Sloping face for bench use provides convenient reading.
Round, Oesk Stand: Unbreakable, moulded, ABS Plastic Black Case; Accuracy ?2.0 FSD; Scale Length about 50mm with knife edge pointer, with or without anti-parallax mirror scale; Desk stand with 4mm terminals at the top; Overall Size about 90x90x110mm.
Round, Desk Stand with Front Terminal: Unbreakable, moulded, ABS Plastic Black Case; Accuracy ?2.0 FSD; Scale Length about 50mm with knife edge pointer, with or without anti-parallax mirror scale; Desk stand with 4mm terminals at the front; Overall Size about 110x80x75mm.
Rectangular: Unbreakable, moulded, ABS Plastic Black Case with clear transparent front window; Accuracy ?2.0 FSD; Scale Length about 60mm with knife edge pointer, with or without antiparallax mirror scale; Desk stand with 4mm terminals at the front; Overall Size about 110x80x80mm.
Square: Unbreakable, moulded, ABS Plastic Black Case with clear transparent front window; Accuracy ?2.0 FSD; Scale Length about 65mm with knife edge pointer, with or without anti-parallax mirror scale; Desk stand with 4mm terminals at the front; Overall Size about 120x80x85mm.
Rectangular: Unbreakable, moulded, ABS Plastic Black Case with clear transparent front window; Accuracy ?2.0 FSD; Scale Length about B5mm with knife edge pointer, with or without anti-parallax mirror scale; Desk stand with 4mm terminals at the front; Overall Size about 100x100x140mm
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AMMETERS, MILLI-AMMETERS, MICRO-AMMETERS, DC (0436)
Moving coil meters in case. for DC measurements.
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