“D" Arsonal Galvanometer   (EE - 664)

Mirror and Scale form. The coil resistance is 200ohms and it is suspended with phosphorous bronze strip. The coil can be raised, lowered or set zero by adjusting screw and can be clamped when not in use.

Sensitivity 0.2 - 0.3μA per division.

Ballistic Galvanometer   (EE - 665)

Used for measurement of small quantities of electrical charge. Leveling Screws for balancing the coil. Coil with mirror suspended between long suspension at the upper end and a spring at lower end. Suspension and spring are made of phosphor bronze alloy. Bakelite case, rigid and robust. Clamping arrangement for transportation. Consistent sensitivity over a large period. Strip provided for making it a periodic Weight 1.5 kg and Size 250 x 150mm.

Lamp & Scale Outfit   (EE - 666)

Suitable for use with reflecting galvanometer, provided with universal adjustment in any direction and fitted with 6 volts lamp which works on 230 volts A.C. with the help of stepdown transformer provided in base. The universal lamp and scale is fitted on heavy base with chromium-plated rod. Complete with Perspex scale calibrated in mm (250-0-250 mm and 0-500mm).

Morse Key   (EE - 667)

Mounted on rectangular wooden base with two terminals, pivoted contact arm with adjustable spring, all fitting are nickle plated.

Morse Sounder   (EE - 668)

Mounted on rectangular wooden base with electromagnet, pivoted arm with adjustable screw, all fillings are chrome plated.

Morse Key and Sounder Combined   (EE - 669)

Mounted on polished wooden base, with on/off switch for battery and four terminals.

Telegraph Set Lecture Patter   (EE - 670)

Set of two. Morse Key and sound units mounted on wooden stands, all connections are clearly visible. Each unit is fitted with 4mm socket type terminals. Each unit works on 4-6 volts DC.

Telegraph Set Table Type   (EE - 671)

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 workable on 4-6volts D.C.

Telephone Set   (EE - 672)

Set of two units, working model of primitive telephone set. One of unit can call at a time by means of a bell operated by single button switch. Works on 4-6 volts D.C.

Motor Model   (EE - 673)

Open type all parts clearly visible with two 4mm sockets, mounted on base plate, working on 4-6 volts D.C., pulley mounted on shaft.

Motor Model with Newton's Disc   (EE - 674)

Mounted on wooden base, workable on 4-6 volts D.C. with Newton's Colour disc.

Motor, Open Model   (EE - 675)

Large size, mounted on wooden base, workable on 4-8 volts D.C. with fan blade and Newton colour disc.

Demonstration Motor, St. Louis   (EE - 676)

For the study of the fundamental principals of electric motor and generators. The motor consists of a two-pole D.C. armature. The brush holder, with two heavy binding post terminals, may be rotated for experiments. The permanent bar magnets are supported by spring brass clamps which are un-adjustable in the horizontal plane to show the effects of pole separation. Complete with two bar magnets, a twopole D.C. armature.

Demonstration Electric Motor   (EE - 677)

A model of the simplest form of D.C. electric motor, having 2- pole armature wound with enameled 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 phosphorous bronze bushes is by means of a pair of 4mm sockets. The motor will operates on 6-8 volts DC.

Dynamo Model   (EE - 678)

With wheel, to generate alternating current (A.C.) and direct current (D.C.) represented by two lamp holders and bulbs marked A.C. and D.C., with the help of driving wheel. Mounted on polished wooden base.

Same as but only generating DC EE - 678/1

Same as but only generating AC EE - 678/2