Suitable for many experimental and demonstration needs in general science and physics laboratory.

Traditional style. Made from 5mm thick and approximate 12mm wide steel strips except for the largest size which is about 15mm wide. Painted red and stamped with 'N' and 'S' to indicate north and south poles. Supplied with soft iron plated keeper (armature).

 

Overall length	Cat. No.
50mm	3102-01
75mm	3102-02
100mm	3102-03
150mm	3102-04

 

Comprises of 4 metallized polystyrene spheres, 2 each of aluminium cans, polythene tiles and 1 each of electroscope, nylon reel, cellulose acetate strip, polythene strip, wire stirrup, electrophorus, proof plane, wire hook, rubber cloth.

 

For laboratory use as a variable series resistance or as a potentiometer. Can control current and voltage.

Made from heat resistant, air cooled, hollow porcelain tube closely wound with a resistance wire of copper nickel alloy which is previously oxidized to provide perfect insulation. The end supports are made of metal with provision for screw mounting. A bakelite slider carries a phosphor bronze contact which can be moved rapidly and smoothly and can rest anywhere along the winding. The insulation is sand-papered off where the slider makes contact. Resistance in ohms and current carrying capacities are engraved on contact carriage. Three terminals are provided for electrical connections, one at each end of the winding and the third at one end of the slide rod so that the unit can be used either as a rheostat or as a potentiometer.

Available with a variety of resistances and current carrying capacities. Power ratings (watts) can be calculated as Watts = (Current in amperes) 2 x Resistance in ohms

 

Max. current Amps	Resistance Ohms	Cat No.
0.25	5700	3149-01
0.54	1475	3149-02
0.77	715	3149-03
1.0	500	3149-04
1.10	360	3149-05
1.6	180	3149-06
0.2	90	3149-07
2.2	90	3149-08
3.1	45	3149-09
4.4	44	3149-10
4.4	20	3149-11
6.2	11	3149-12
8	5.6	3149-13
8	5	3149-14
RHEOSTAT - METAL ENAMELED PIPE
2.5	50	3150-01
5	11	3150-02
5	15	3150-03

Caution: Rheostat of unprotected design should not be used on electric supplies more than 50 volts.

 

 

For qualitative and quantitative study of the electrolytic decomposition of electrolytes such as water, hydrochloric acid etc.

Consists of two vertical 50mL, gas-collecting, graduated glass tubes with stopcocks at top and joined by a bridging tube to a reservoir and fitted with a pair of platinum electrodes at the lower ends of the glass tubes. A lead wire connecting the platinum electrode passes through the glass tube for external connections, so that only the platinum electrode comes in contact with the electrolyte. Packed in a styrofoam case. Mounted on a cast iron stand designed for safe clamping. Requires a 6V battery or low voltage D.C. power supply for operation.

 

For studying electromagnetic induction, ferromagnetizm and principles of a transformer.

Consists of two coils wound with enamelled copper wire over heavy plastic spools fitting one within the other. The inner primary coil has 1250 turns of heavy wire and the outer, acting as secondary coil with 250 turns of fine wires. Square supports of thick insulating material are used as vertical or horizontal mount. Both coils are equipped with binding posts and a soft iron core for induction studies.

Moving coil type meter. The basic sensitivity of this meter is 5mA, 100mV f.s.d. It is used to demonstrate the working principle of AC and DC ammeters and voltmeters with interchangeable plastic scale. Housed in a sturdy plastic frame 30x15x30cm.

DC Current Range

3031-10	2.5-0-2.5mA
3031-11	10-0-10mA
3031-12	0-10mA
3031-13	0-50mA
3031-14	0-100mA
3031-15	0-500mA
3031-16	0-1A
3031-17	0-5A

DC Voltage Range

3031-31	0-1V
3031-32	0-5V
3031-33	0-10V
3031-34	0-15V
3031-35	0-300V
3031-36	5-0-5V
3031-37	10-0-10V
3031-38	0-100mV

Useful for student demonstrations, plotting magnetic fields etc. Made from magnetic steel strips. Painted red and stamped with ‘N’ and ‘S’ to indicate north and south poles. Supplied in pairs with cardboard separator and plated soft iron keepers. Dimensions.

lxwxh	Cat. No
75 x 12 x 5mm	3101-01
100 x 12 x 5mm	3101-02
150 x 19 x 7mm	3101-03

Strong magnets for laboratory demonstration work, magnetizing needles, etc. Ideal for extended classroom use. Painted red and north pole marked. Supplied in pairs between plated keepers and a plastic separator. Dimensions:

lxwxh	Cat. No.
50 x 13 x 6mm	3106-01
50 x 15 x 10mm	3106-02
75 x 11 x 6mm	3106-23
75 x 15 x 10mm	3106-03
100 x 10 x 7mm	3106-04
100 x 15 x 10mm	3106-05
150 x 19 x 7mm	3106-06

Suitable for many experimental and demonstration needs in general science and physics laboratory. Traditional style. Made from 5mm thick and approximate 12mm wide steel strips except for the largest size which is about 15mm wide. Painted red and stamped with ‘N’ and ‘S’ to indicate north and south poles. Supplied with soft iron plated keeper (armature).

Overall length	Cat. No.
50mm	3102-01
75mm	3102-02
100mm	3102-03
150mm	3102-04

Powerful U-magnet, made of steel. Overall dimension 140 x 80 x 18mm.

For having high magnetic field. Grounded on all sides.
Dimensions:

lxd	Cat. No.
25 x 5mm	3107-01
50 x 5mm	3107-02
50 x 10mm	3107-03
125 x 10mm	3107-04

Suitable for laboratory use. Approximate outside height about 28mm and outside width about 26mm painted red with keeper.
3108-01

For observing magnetic field. Grease free filing in plastic bottles. pack of 500g.

Type	Fine	Coarse
Cat No.	3124-01	3124-02

To clearly see the magnetic field lines in 1,2 or 3 dimensions.
Size 150x75mm. Supplied without the magnet.
3108-51

For studying magnetic phenomena such as operation of a compass, testing of magnetic poles, finding the direction of electric current etc. Consists of a magnetized steel needle about 150mm long with brass bearing pivoted on a non-magnetic metal stand. North pole is marked in red. The needle when not in use is reversed and kept in main rod for safety.
3118-01

For collision studies in physics and other applications such as focussing magnet etc. Charged on the faces.

o.d x i.d x h	Cat. No.
32 x 18 x 6mm	3111-01
36 x 18 x 8mm	3111-02
45 x 22 x 9mm	3111-03
45 x 22 x 11mm	3111-04
53 x 24 x 9mm	3111-05
53x 24 x 11mm	3111-06

For tracing the magnetic fields of bar magnets. Consists of a magnetic needle encased in cylindrical aluminium case with glass top. Card dial.

Diameter	Cat. No.
16mm	3121-01
25mm	3121-02
37mm	3121-03
50mm	3121-04
75mm	3121-05
100mm	3121-06

Approximate dimensions:

lxwxh	Cat No.
54 x 13 x 9mm	3113-01
40 x 25 x 10mm	3113-02

For plotting and exploring magnetic field. In a plastic case with a four color graduated dial. Full circle divided into 360 with N, W, S, E, etc. directions indicated. Graduated every 5 and labelled in 15 increments. The red tip indicates north. Diameter 38mm.
3121 -21

To show that like magnetic poles repel each other by placing three or more ring magnets on a non-magnetic stand. Comprises three colored ring magnets (o.d. x i.d. x h), 32 x 18 x 6mm magnetized parallel to the axis, equipped with an acrylic rod mounted on a plastic base. The magnets float in the air, one over the others and spring back up when pushed down.

Here’s an easy way to demonstrate magnetic fields in class. Simply use these small, clear- cased compasses to map magnetic fields by placing them around different shaped magnets. Size 19mm.
1249-60

For generating static electric charges and causing electric discharges. Relative to Van de Graaf it produces      higher
current with lower voltage.

For creating frictional electricity with materials like silk, wool, fur for charging electroscopes etc. Approximate dimensions of solid rods are (l x d) 250-300 x 10-13mm

Soda glass, solid	3128-01
Glass (borosilicate) tubular with one end drawn	3128-02
Plastic solid (bakelite)	3128-03
Ebonite (hard rubber)	3128-04
Polyethylene	3128-05
Sealing wax square, Shellac 200 x 10 x 1Omm	3128-06

For producing electrostatic charges on friction rods, electrophorous plates etc.
Approximately 30cm square pads.

Material	Cat. No.
Cotton ???annel	3129-01
Silk ???annel	3129-02
Wool ???annel	3129-03

Mounted on a insulated stand.


Sphere 5 cm                       :  3000-01
Cone 12.5 x 5 cm                 : 3000-02
Cylinder 10 x 5 cm              : 3000-03

For generating static electric charges and causing electric discharges. Relative to Van de Graaf it produces higher current with lower voltage. Consists of two high resistance plastic disks of diameter 25mm approx, with equally spaced metal sectors.
The discs are supported in two rigid upright supports, rotating in opposite directions with a hand crank. Provided with a system of induced charge collecting brushes, adjustable ball-ended electrodes and cylindrical Leyden jar capacitors for obtaining higher potential. Produces substantial opposite charges which are deposited in the capacitors and on metal spheres. A rapid sequence of sparks can be generated by lowering the system’s capacitance. Mounted on insulated wooden base.
3131 -01

For experiments in detection of electric charge and determination of polarity. Consists of an Erlenmeyer flask 250mL, and a plated rod with a knob of diameter 16mm (2/3in) passing through a rubber stopper. A pair of aluminium leaves are suspended from the rod.
3132-01

More sensitive instrument as leaf de???ection is unaffected by air currents or by charges residing on the case. Reacts only to charges which are intentionally brought near or put on them.

Comprised of a box made of aluminium with two transparent glass windows to shut out air currents and a plated metal support rod entering from the top through a polyethylene insulator. Two leaves of thin aluminium foil are suspended from the support rod. Supplied with three pairs of aluminium leaves.

For transferring electrostatic charges from one body to another such as Leyden jars and electroscopes. Consists of a plated brass disc of diameter 25mm on a 15cm long insulated handle.

For demonstrating the attraction and repulsion of electric charges. Consists of an insulated brass pillar and hook on a base. Supplied with two colored pith balls with strings attached.

Comprises of 4 metallized polystyrene spheres, 2 each of aluminium cans, polyethylene tiles and 1 each of electroscope, nylon reel, cellulose acetate strip, polyethylene strip, wire stirrup, electrophorus, proof plane, wire hook, rubber cloth.

The 30cm copper tube has a windowed groove down the side that permits observation of the descending magnet or slug. Observe the effects of eddy currents as the magnet ???oats downwards, apparently defying gravity. Supplied with metal slug and a similar sized magnet.

Improved version of simple meter bridge. For precise measurement of an unknown electrical resistance and for comparing nearly equal resistances without determination of the end- resistances. Comprised of a hardwood base 1.1 meter long with laminated top and plastic feet. A meter long constantan resistance wire, 24swg, is stretched along a meter scale graduated in millimeters ???tted on this base. Each end of the wire is ???rmly and precisely attached to plated copper strips. Three more copper strips are ???xed parallel to the wire providing four gaps. Electric connections are made through 4mm socket binding post terminals. Supplied with a knife - edge jockey to make contact with resistance wire and the galvanometer (not supplied).

For wheatstone bridges and potentiometers. A brass metal knife edge is mounted on one end of an insulated handle with a 4mm socket binding post terminal on the other end. Overall length 100mm. Pack of 10 pieces.

For providing momentary contact in electrical circuits which are normally open. Can also be use in morse code applications. Consists of a bakelite base with two 4mm socket binding post terminals. Circuit is closed with plated spring hard brass strip with insulated knob. Silver contacts.

For making temporary one wire electrical connections in low voltage electrical circuits. Made of brass. With a hole for mounting.

Comprised of two or more brass blocks fitted with brass terminals and mounted on a black bakelite base. Tapered plugs with bakelite moulded tops fit into the tapered holes between the blocks providing low resistance contact.

Type	Cat. No.
One way	3146-11
Two way	3146-12
Three way	3146-13
Four way	3146-14

Useful as a basic component for any electrical laboratory. Mounted on a bakelite base. Allows visible connection for easy use. With screw holes and suitable for bench fixing and panel mounting. Available in four configurations.

Type	Cat. No.
Single-pole, single-throw	3147-21
Single-pole, double-throw	3147-22
Double-pole, single-throw	3147-23
Double-pole, double-throw	3147-24

Open bulb miniature socket. Consists of a 53mm diameter plastic base with two plated brass Fahnstock clips for connecting wires to a miniature lamp bulb holder.

Switch for lamp holder. Mounted on plastic
base, 50mm dia.

For flash lamp bulbs. Consist of a rolled shell of brass mounted in plastic base with two screw terminal connections. Diameter 29mm and height 16mm. For use at voltages up to 50V A.C.

Mounted on a plastic base. Connection via 4mm socket terminals.

To produce high voltage alternating current or pulses of high voltage current from a low voltage direct current source. Suitable for use with gas-filled discharge tubes, vacuum tubes, eudiometers and for general laboratory work. Comprised of two coils fully enclosed in a polished wooden case with binding posts. Includes adjustable vibrator system, primary current polarity reversal and off/on switch, a condenser enclosed in the box and special alloy contacts. Spark gap at the discharge points can be adjusted by sliding rods back and forth. Requires 6-12 volt power source such as a battery.

Maximum Spark length	Cat No.
25mm	3148-01
50mm	3148-02

For laboratory use as a variable series resistance or as a potentiometer. Can control current and voltage. Made from heat resistant, air cooled, hollow porcelain tube closely wound with a resistance wire of copper nickel alloy which is previously oxidized to provide perfect insulation. The end supports are made of metal with provision for screw mounting. A bakelite slider carries a phosphor bronze contact which can be moved rapidly and smoothly and can rest anywhere along the winding. The insulation is sand-papered off where the slider makes contact. Resistance in ohms and current carrying capacities are engraved on contact carriage. Three terminals are provided for electrical connections, one at each end of the winding and the third at one end of the slide rod so that the unit can be used either as a rheostat or as a potentiometer. Available with a variety of resistances and current carrying capacities. Power ratings (watts) can be calculated as Watts = (Current in amperes) 2 x Resistance in ohms

Max. current Amps	Resistance Ohms	Cat No.
3.3	11	3149-21
3.3	22	3149-22
5	11	3149-23
5	15	3149-24
6.5	7.5	3149-25
6.5	13	3149-26
8	2.5	3149-27
8	4.5	3149-28
8	8.5	3149-29
0.3	1700	3149-30
1	175	3149-31
1.6	100	3149-32
1.8	92	3149-33
2.3	34	3149-34
RHEOSTAT - METAL ENAMELED PIPE
3.3	21	3150-21
5	14.2	3150-22
6.5	8.2	3150-23

For assembling voltaic cells, electrolysis experiments etc. Size (l x w), 125 x 25mm.

Material	Cat. No.
Aluminium	3151-01
Carbon	3151-02
Copper	3151-03
Iron	3151-04
Lead	3151-05
Zinc	3151-06

Size (I x w), 125 x 50mm with 4mm socket binding post terminal.

Material	Cat. No.
Aluminium	3151-21
Carbon	3151-22
Copper	3151-23
Iron	3151-24
Lead	3151-25
Zinc	3151-26

For electrolysis of reactive materials like hydrochloric acid and other compounds. Suitable alternative to platinum. Alligator clips can be used for making wire connections.

Size	Cat. No.
150 X 5mm	3151-41
200 x 5mm	3151-42

For measuring the quantity of electricity from the mass of copper deposited on one of its electrodes. Consists of three copper plates suspended from a bakelite cover of a plastic jar. Outer two electrodes acting as double anode are connected to one binding post on the top. The third inner copper plate ???xed to another binding post acts as a cathode and can easily be removed for weighing.

For qualitative and quantitative study of the electrolytic decomposition of electrolytes such as water, hydrochloric acid etc. Consists of two vertical 50mL, gas-collecting, graduated glass tubes with stopcocks at top and joined by a bridging tube to a reservoir and fitted with a pair of platinum electrodes at the lower ends of the glass tubes. A lead wire connecting the platinum electrode passes through the glass tube for external connections, so that only the platinum electrode comes in contact with the electrolyte. Packed in a styrofoam case. Mounted on a cast iron stand designed for safe clamping. Requires a 6V battery or low voltage D.C. power supply for operation.

For use with Hoffman Electrolysis Apparatus described above (3155-01).

For use with Hoffman Electrolysis Apparatus described above. Size (I x d), 100 x 5mm. Inserted in a rubber stopper with insulated lead wire.

Designed for simplicity and economy. Ideal for lecture table or student laboratory work. Consists of nonconducting support equipped with binding posts connected to 2 insulated platinum electrodes, 2 inverted 150mm test tubes, and a 112 x 125mm glass jar.

A simple safe cell for students and requires a very small quantity of electrolytes. It consists of a 75x25mm glass tube, the lower end of which accommodates a tight-fi tting rubber stopper with two carbon electrodes. Contact with each electrode is by means of a crocodile clip. The evolved gas is collected in two glass test tubes 75x10mm.

Copper vessel 135x100mm (ht x d) with perforated shelf for Copper Sulphate crystals. Supplied with the porous pot and zinc rod.

Charged porous pot 140 x 60mm (h x d) having an e.m.f. 1.5V in a rectangular polyethylene jar. Supplied with the zinc rod.

For using “D” flash light cell as small, low-voltage power source in the science laboratory, kits etc. Snap-fit aluminium holder for “D” dry cells with Fahnstock clips on both sides for external connections. Provided with holes for attaching to a board or panel. Any number of cells can be connected in series or parallel.

Model of lifting magnet used in industry, such as scrap metal lifter. Consist of two plastic bobbins wound with enamelled copper wire and mounted on each arm of a soft iron U core. Each of the bobbins is fitted with two 4mm socket binding posts. Includes an armature with hook to be used as a lifting ring. Operates on 3-6 Volts D.C. Overall length 100mm.

To demonstrate the concept of time and timing in applications such as measurement of velocity and acceleration, free fall experiments, projectiles and circular motion. It employs a concealed electromagnet with spring-loaded armature, which vibrates and produces dots on a paper tape via a carbon disc. Working voltage 6-12V

Type	Cat. No.
A.C.	3012-01
D.C.	3012-02

For a range of basic experiments such as electric doorbell experiments in science laboratory. Made of plated pressed steel gong diameter 6.8mm. Total length 15.5cm. Works on 3V dry cells. Coils are enclosed under a removable plastic cover with 4mm socket terminals.

A working model built of large components, the simple construction of which enables the principles of operation of the electric bell and electro- magnet to be easily understood.

Pupils can conduct many experiments in electromagnetism, including the manufacture of their own working electric motor. Comprises 8 anisotropic alloy magnets, 8 anisotropic ceramic ferrite magnets, 4 steel magnets, yokes, plotting compasses, hardboard formers, iron fillings dispensers, bottle of iron fillings, double C-cores, C-core clips, rings and split rings, support bases, armatures with axle tubes, aluminum axle rods, split pins, rivets, rubber tubing, formers, reels, cellulose tape, reels of Cu wire, white paste board, plain postcards, white cotton, carbon resistors,(10W and 100W), flash lamp bulbs, neon bulbs, bulb holders (MES), wood clamps, wood blocks and instructions.

For studying the functions of the basic parts of electric motors and demonstrating how electrical energy is converted into mechanical energy. Comprised of a 2-pole D.C. armature with coils and mounted in an aluminium bracket with two binding posts and 4mm socket binding post terminals. The armature is held on brass cone bearings and a shaft fi tted with split commutator. Complete with two permanent magnets in adjustable holders mounted on bakelite base (I x w), about 173 x 97mm. Works on 6V D.C. power source.

Show the conversion of mechanical energy into electric energy and principle of working of simple AC and DC Dynamo. This model uses the basic assembly as the motor, but is mounted on a base- plate 230 x 90 mm approximate, which also carries a hand-drive pulley 120 mm dia. coupled to the smaller dynamo pulley by a rubber belt to give a step- up ratio. Electrical output is via a pair of 4 mm sockets and a light emitting diode is provided as simple output indicator. The model may also be used as a motor on a 6-8 V D.C. supply.

A model of the simplest form of D.C. electric motor, having 2-pole armature wound with enamelled copper wire, and a permanent magnetic field provided by a removable bar magnet. The construction of the model is completely open and all components are readily observable. A disc-type commulator is incorporated and external connection to the phosphorus bronze bushes is by means of a pair of 4 mm sockets. The motor operate on 6-8 volts D.C.

Consists of simple bicycle generator, mounted and geared so that it can be driven either at speed or slowly with the help of a crank. It demonstrates AC wave with help of an oscilloscope as also how the brightness of lamp increases when a dynamo powering it, turns faster.

For demonstrating the relationship between magnetism and magnetic effect of electric current fl owing in a wire. Comprised of a permanent magnetic needle, 15cm, free to rotate at the center of an aluminium frame suitably connected to permit current to fl ow over or under the needle in either direction.

For studying magnetic induction properties produced by electric current and the effect of an iron core, etc. Consists of a plastic spool with windings of enamelled copper wire having brass binding posts on square end supports. Includes a soft iron core rod of diameter 18cm and instructions.

To provide external magnetic field where required and to change the rate of magnetic flux passing through a coil. Consists of a plastic spool with windings of insulated copper. End plates have brass binding posts. Capacity 10 amperes when used intermittently and 5 amperes when used continuously.

Pair of Laminated C-Core with clamp. These type of cores are used in instrument transformers, power transformers, inductors, transducers, variable - ratio transformers, insulation transformers, pulse transformers, AC-DC chokes, high frequency rectifi ers and special transformers. C- Cores are strip wound,  impregnated and cut into two halves. Since these cores are assembled around the bobbins in a very short time it takes less time to manufacture the transformer

For studying electromagnetic induction, ferromagnetizm and principles of a transformer. Consists of two coils wound with enamelled copper wire over heavy plastic spools fi tting one within the other. The inner primary coil has 1250 turns of heavy wire and the outer, acting as secondary coil with 250 turns of fi ne wires. Square supports of thick insulating material are used as vertical or horizontal mount. Both coils are equipped with binding posts and a soft iron core for induction studies.

For quantitative investigation of magnetic field within solenoids having different cross-sectional areas and number of turns per meter. The set has square sections, single layer solenoids, each having wound length of approximately 260mm and mounted on a former fi tted with small feet and 4 mm sockets. Two solenoids are of 2500 mm2 crosssectional area and have 165 and 330 turns respectively and the other two area of similar but of 5000mm2 cross-sectional area.

To investigate qualitatively and quantitatively, the interaction between the field surrounding a current-carrying wire and that produced in the fl at solenoid. It consists of approximately 258 turns of enameled copper wire wound on wood and plastic former. Connections are made via. 4mm socket clips.

Interchangeable 4mm spring plug type with non-inductive resistance coils, accuracy + 0./5%. Each coil rated 1W. In wooden case, with external connection via 4mm sockets.

Range	Cat. No.
0 to 50 x 1 Ω	3015-01
0 to 100 x 1 Ω	3015-02
0 to 500 x 1 Ω	3015-03
0 to 1000 x 1 Ω	3015-04
0 to 5000 x 1 Ω	3015-05
0 to 10000 x 1 Ω	3015-06

Four decade dial type, with tapping points between each dial to allow use as an accurate potential divider, ratio arm, etc. For A.C.or D.C. measurements, accuracy better than 0.1% except 0.1 Ω which is + 0.5%, continuous loading 0.5W each step. In metal case 273 x 108 x 102mm, with earth connection for high voltage or A.C use and 4mm socket terminals appropriately positioned in circuit diagram on top panel.

Range	Cat. No.
0 to 999.9 X 0.1 Ω	3015-30
0 to 9999 X 1 Ω	3015-31
0 to 99990 X 10 Ω	3015-32

Wire wound resistance in case with 4mm socket terminals for connection. Accuracy 0.2%.

3050-02	0.1 ohms
3050-04	0.5 ohms
3050-06	1 ohms
3050-08	2 ohms
3050-09	3 ohms
3050-10	5 ohms
3050-12	10 ohms
3050-14	50 ohms
3050-16	100 ohms

For uses involving changing magnetic flux in electromagnets, electric motors, generators and transformers. Dimension (d x l), 200 X 6mm.

Ring of bakelite 162mm and wound with three coils of insulated copper wire 2, 50, 500 turns. Connections can be made with 4mm socket terminals.

To demonstrate the electric fields patterns. Supplied with 3 pair of electrodes that is, straight, pointed and circular.

Allows students to investigate nature and properties of electricity
using simple circuits that can be constructed on a base board. The kit


consists of the following:

• 1 Base board
• 12 Connectors plain. For building the circuit
• 9 Lamp holders, mounted on connectors
• 1 Rheostat, mounted on a connector
• 2 Push switches, mounted
• 2 Crocodile connectors with lead
• 2 Crocodile clips
• 1 Reel of bare copper wire
• 1 Reel of bare eureka wire
• 1 Reel of plastic covered copper wire
• 2 Leads, crocodile to 4mm plug connectors
• 1 copper foil 150mm square
• 1 Resistor
• 2 Soft iron nails
• 1 Piece of steel wool
• 1 Recti???er
• 4 Pencil leads
• 1 Hardboard disc
• 10 Lamps 1.25V

The condenser consists of two adjustable capacitive plates, 100mm diameter and seperated by a glass dielectric plate. Connection with hese plates is with 4mm socket terminals. This glass plate is held in a clip betwen the discs and can be replaced by another material to show the effect of different dielectrics.

The generator is provided with a conductor sphere with diameter of 220 mm. The sphere is equipped with a 4 mm socket (for connection to other equipment through a wire with Banana plug). With discharging sphere.

Consists of a large 220mm conductor sphere and a 100mm discharging sphere. The conductor sphere is equipped with a 4 mm socket (for connection to the accessories). The motor operates at a speed up to 5000 r.p.m. and its speed can be varied.

marked 3055-05


ACCESSORIES


Perspex pillar with suspended metallised sphere.
3055-11
Faraday’s Pail. (The Perspex pillar will also plug into this pail.)
3055-13
Perspex cylinder with metal cap and with metallised spheres.
3055-15
Head of hair with comb.
3055-17
Electric whirl.
3055-19
Neon bulb.

Housed in a plastic case with sloping face. 4 mm socket terminals are provided for connection

Ammeter DC Range

3020-05	100mA
3020-06	500mA
3020-07	0-1A
3020-08	5A
3020-09	10A

Dual Range

3020-21	1/5A
3020-22	0-3/30A

Voltmeter DC Range

3023-05	0-500mV
3023-06	0-1V
3023-07	0-5V
3023-08	0-10V
3023-09	0-15V
3023-10	0-30V

Dual Range

3023-21	0-100/500V
3023-25	0-5/15V

Galvanometer

3027-00

30-0-30

DC Current Range

3031-10	2.5-0-2.5mA
3031-11	10-0-10mA
3031-12	0-10mA
3031-13	0-50mA
3031-14	0-100mA
3031-15	0-500mA
3031-16	0-1A
3031-17	0-5A

DC Voltage Range

3031-31	0-1V
3031-32	0-5V
3031-33	0-10V
3031-34	0-15V
3031-35	0-300V
3031-36	5-0-5V
3031-37	10-0-10V
3031-38	0-100mV

For investigating the interaction between magnetic fields and a current carrying wire. Includes both wide and narrow current balance wires. A copper wire formed into a rectangle with a discontinuity at one end and is balanced on a pair of metal fulcra. The ends are joined by a plastic sleeve through which a brass pointer is fitted. Electrical connections are made via a 4mm socket in the end of each fulcrum.

Made of steel (plated). Pack of 100
(50 Red and 50 Black)

Brass parts with stainless steel spring to maintain adequate contact pressure. Pack of 100 (50 Red & 50 Black)

Banana plug at both ends of a 500mm insulated copper wire.

3046-51	Red
3046-55	Black

High quality moulded plastic parts. All metal parts are made of brass.
Sold in packs of 50.

3046-10	Red
3046-12	Black
3046-14	Yellow
3046-16	Green

swg	20	22	24	26	28	30	32
125g	3038-02	3038-04	3038-06	3038-08	3038-10	3038-12	3038-14
250g	3038-22	3038-24	3038-26	3038-28	3038-30	3038-32	3038-34

Copper Wire, Enamelled

swg	20	22	24	26	28	30	32
125g	3038-42	3038-44	3038-46	3038-48	3038-50	3038-52	3038-54
250g	3038-62	3038-64	3038-66	3038-68	3038-70	3038-72	3038-74

Eureka Wire (Constantan Wire)

A 60% 40% Cu-Ni alloy, resistance wire, bare, wound on reels.

swg	20	22	24	26	28	30	32
25g	3040-02	3040-04	3040-06	3040-08	3040-10	3040-12	3040-14
125g	3040-22	3040-24	3040-26	3040-28	3040-30	3040-32	3040-34
250g	3040-42	3040-44	3040-46	3040-48	3040-50	3040-52	3040-54

A single strand copper wire of 24 S.W.G. with PVC insulation

3038-80	10 M Roll
3038-81	90 M Roll

These are transparent working meters and when displayed on an overhead projector, are visible in a larger classroom.

3035-02	Overhead AC Ammeter Triple, 0-0.1A/1A/10A
3035-04	Overhead AC Voltmeter Dual, 0-15V/150V
3035-06	Overhead DC Ammeter Triple, 0-50mA/500mA/5A
3035-08	Overhead DC Voltmeter, Triple, 0-3V/15V/150V
3035-10	Overhead Projection Galvanometer; -25 to 0 to +25μA

Used in conjunction with plastic beads and ring magnets for motion and collision studies in physics and for other applications. Can be magnetized along any side.