Having copper rod of 12x1” size and fitted in dissectible teak wooden case lined with felt. Sockets are provided for the insertion of thermometer so that the temperature at two points along there and the points of entry and exist of the coolant can be taken. With out thermometer

Double scale range –10 to + 50 o X1 C and –20 to 120F x2F , red sprit filled mounted on screen printed scale on wooden nicely polished base

Enclosed in a borosilicate glass tube of approximately 50cm long and 2cm diameter A fine platinum wire is wound on mica frame. Its resistance is approximately 2.8 ohms. Two compensatory leads are connected to four terminals on a square block. The terminals are marked CL and PL to represent compensating and platinum leads.

With C& F scale, wooden polished or plastic

It consists of 12 Pairs of bismuth and antimony bars joined together in series with insulation between them. The couples thus arranged are enclosed in a brass frame having two terminals connected to the bismuth and antimony poles. Complete with nickel plated brass cone and mounted on an adjustable stand.

Operates on 12 volts A.C. the timer employs electromagnet, with spring loaded armature with vibrates above a support table for a carbon disc Paper tape ,drawn through guides on the table , is struck by a dotting screw carried on the armature . Additional with extra guides accommodate 4.5mm external diameter rubber tubing for the pearls in air, water drop experiment. The peg on the support table is moveable to allow maximum use of carbon paper discs. Supplied with 90-meter roll of tape and carbon disc The ticker tape timer produces dots spaced at 1/50 or 1/60 intervals depending on main frequency.

Cast Ion top and mild steel legs. Top painted, lags are bent out wards for stability. Size (diameter x Height)
a) 125x150mm
b) 125x200mm

Cast Iron top and mild steel legs painted are bent out wards for stability Size (top side X height)
a) 100x150mm
b) 125x150mm
c) 100x200mm
d) 125x200mm

A heavy steel fork of about 60 vibrations per second is mounted on a heavy cast iron base. The electromagnet is adjustable so that the amplitude of vibration may be varied between wide limits. Complete with mirror for lissajou’s figures experiments.

Nickel-plated with plain shanks, frequency marked C256, D 288, E320, F 34 1.3, G384, A426.6, B480, C512 Per set of 8 in a box

Consisting of U –tube of glass fitted on graduated stand 50cm high

Made of steel, chrome plated, double scale metric graduated to 140mm, vernier reading 0 to 1mm. Inches scale graduated to 5.5 “ vernier reading 0.2 to 1.25 inches, sliding jaw with thumb mount for fine adjustment. IME type packed in velvet line box.

Consisting of a rectangular box of metal 22x10x16cm (length width x height) with sliding glass front and having two openings on top, over which glass chimneys are placed.

With 2 stop cocks and remove able platinum electrodes graduated limbs. Capacity 50ml
a) Platinum electrode fused at the end of a glass tube pair
b) Platinum electrodes m sealed in glass tube pair
c) Carbon electrode, pair

Moving coil with jewel bearing flush mounting in bakelite case of 65mm diameter with wire lead terminals at back Accuracy +/- 2.5 F.S.D. complete with Bakelite stand with tree 4mm socket terminals. Two range 0.5 volt,0-15 volts. Or any other common range. Resistance 1000Ohms

Moving coil with jewel bearing flush mounting in Bakelite case of 65mm diameter wit h wire lead terminals at back Accuracy +/- 2.5 F.S.D. Complete with bakelite stand with 4m m lock type bakelite terminals. Any range 1volt to 300

Moving coil with jewel bearing flush mounting in bakelite case of 65mm diameter with wire leads terminals at back measuring 110x100x110mm having a stopping front for glare free reading. Range 0-1volt, 5-150 –300 volts complete with Bakelite stand with four 4mm socket terminals. Resistance 1000ohms

For demonstrating longitudinal and transverse motions consisting of a number of eccentric discs supporting a series of metal rods on revolving the handle, transverse waves are obtained. Longitudinal waves are obtained with bent rods running in a metal guide.

For demonstrating the movement of progressive transverse waves comprising 22 small belts on wire rods, With eccentric discs supporting a series of metal rods .On revolving the handle, transverse waves are obtained. Longitudinal waves are obtained with bent rods running in a metal guide.

Diameter of large wheel 150mm and of small 75mm made of wood with plated metal mounting pin.

With 2 plastic plate’s diameter 30cms, each carries aluminum foil segments. Maximum spark length 75mm. The neutralizing bars are provided. The collecting brushes are carried on a large insulating beam. A pair of high capacity Leyden jars are incorporated which may be connected or disconnected as required. The complete apparatus is mounted on a wooden base with rubber feat dimensions 450x175x500mm length X width x height

For use on tripod s, flat gauze with asbestos fitted centre
a) 125x125mm
b) 150x150mm

This kit allows the students to investing the nature and properties or electricity using simply circuits easily constructed on a baseboard. Spring connectors are used to have different circuits for study.
1 1 Baseboard 35cm square with a matrix of metal peg terminals at 9 cm. Spacing and the battery holders mounted on a hard board. Pegs adjacent to battery holders are drilled to accept 4mm plug, with rubber feet.
2 20 Flash lamp bulbs, 1.25 volt, 0.25 Amp
3 3 Leak proof batteries 1.5 volts
4 10 Connectors with lamp holders
5 12 Ordinary connectors
6 1 connector with a rheostat of 25 ohms, 1 watt, wore wound
7 1 Silicon rectifier, 1 to 500mA, PIV 50 Volt
8 1 Resistor, 3,9 ohms, 5watt.
9 2 Flexible leads with 4mm plug and crocodile clip
10 2 Flexible leads with crocodile clip
11 2 Crocodile clips
12 2 Connectors with contact key
13 2 Soft Iron nails, length 5cm square head
14 1 Reel of 20 SWG, bear copper wire
15 1 Reel of 34 SWG, bear copper wire
16 1 Reel of 26 SWG, PVC covered copper wire
17 1 Electrode support disc, hard board, 75mm diameter with two holes 1 inch a part to take pencil electrodes when investigating the electrical conductivity of different liquids .
18 2 Pencil lead electrodes 100x2mm, length x diameter
19 1 Sheet of copper foil, to be cut into strips to make electrodes for copper plating experiments 15cm square
20 Packed of steel wool.

The instrument consists of two iron frames connected by a link. The frames are fitted with self-centering chucks. An accurately cut micrometer screw to read to 0.01 mm and main scale of 0-10mm is fitted in one frame. One end of a sensitive spirit level is pivoted to one of the frames, the other ends rest on the point of a micrometer screw fitted in the other frame.