Starlac Industries Mahesh Nagar, Ambala, Haryana

With high point wide field eye pieces 10x or 15x, parafocal zoom objective of 1x to 5x providing continuos variable magnification from 10x to 15x depending upon the eye piece and supplementary lens used, having well designed pole stand, having extension pillar, 360º revolving zoom Trinocular Head, 6 volts 21 watts incident spot light illuminator with light control transformer. Without Supplementary lens attachment. (a) Extra charges for pair of HWF 10x or 15x eye pieces (b) Supplementary lens attachment 2x or 0.5x or 1.5x

To measure wave length of light by observing fringes produced by interference of two light beams from a common source, passing through two slits. Comprises a photographically reproduced double slit 10 mm x 1 mm. Separation, protected by glass plates in 50 x 50 mm mount. Mounted in a frame with a hinged joint and < micrometer screw to give fine adjustment.

Consists of base board with nos. of metal connection pillars, nos. of flexible connection strips and accessories comprises of 18 bulbs 1.25V, 0.25A, 9 connectors with lamp holders, 12 plain connectors, one connector with rheostat, 1 rectifier, 1 resistor, 2 leads with crocodile clips, 2 leads with 4mm plug and crocodile clips, 2 crocodile clips, 2 bell push, 2 iron nails, 1 length each bare copper wire. Eureka wire, plastic covered copper wire, 1 hard board disc drilled, 4 pencil leads, 1 copper foil, 1 steel wool piece. Supplied in card board box.

Designed to produce maximum torque relative to its moment of inertia as for a given change in wind direction, it is rotated with the minimum of friction and is balanced to avoid bias towards any particular direction. Balanced vane with bearing mounted on steel pivot pillar terminates in 2.5 cm. BSP (Male) thread. Complete with locking nut, fitted with four arms with N.E.W.S. Overall size 40x40x40 cm. (Approx), All parts can easily be assembled for use.

Overall height 43 cm, for use in vertical and horizontal position, fitted with hand wheel and belt drive pulley. Suitable for use with Savart's wheel. Siren disc or Colour discs or centrifugal governor but without it shown in the picture.

The two plates are supported in two rigid uprights and driven by belt in opposite direction. They are heavy, high resistance plastic with sectors of aluminium sheet. Two Leyden jars (condensers) made from glass and aluminium foil. The whole is mounted on a wooden base nicely polished. a) Black/Transparent plate dia. 200mm b) Black/Transparent plate dia. 250mm c) Black/Transparent plate dia. 300mm

Two grooved wheels of hardwood, dia i50 and 50 mm respectively making a double wheel pivoted on a spindle 10 mm diameter which projects for 100 mm distance. Apparatus can be clamped on retort stand. Supplied complete with two hooks and 6m whip cord but without masses and without retort stand.

This kit is most versatile as it enable students to perform a wide range of experiments in electromagnetism such as construction of working motors and meters. For 8 students. It comprises eight anisotropic alloy magnets, eight anisotropic ceramic ferrite magnets, four steel magnet yokes, six plotting compasses, four hard board formers for compasses, one bottle iron fillings, four iron filling dispensers, four each double C-cores, clips for C-cores, aluminium rings, split aluminium rings, four each support bases, armature with axle tubes, aluminium axle rods, eight split pins, 16 rivets, one length latex rubber tubing, four each formers for coils, reels cellulose tape/ reels copper wire, four each sheets white pasteboard, plain postcard, reels white cotton, four each C-resistors 100 ohm, 10 ohm, ten flash lamp bulbs, four neon bulbs, eight (MES) bulb holders, wood clamp, wood block.

A glass bulb 40 mm dia approx. lead shots content is adjusted so that bulb floats in cold water and sinks in hot water.

For demonstrating both longitudinal and transverse motions, comprising a number of eccentric discs supporting a series of metal rods. Transverse waves are obtained on revolving the handle, longitudinal waves obtained with bent rods running in a metal guide and fitted on polished wooden base.

This is to demonstrate the movement of progressive transverse waves. It comprises 22 small balls on wire rods with eccentric motion attachment with driving handle and fitted on polished wooden base.

For demonstration of wave motion, pulses, reflection and interference, steel wire close wound helix, 19 mm diameter closed length 3 mtrs. extending to approximately 9 mtrs.

To show conversion of mechanical energy into electrical energy. Turbine with transparent cover, inlet and outlet tubes, direct! connected to a dynamo. Fitted on base.

Lens diameter: 25 mm, lens is made of clear plastic and mounte in plastic frame. Magnification : 3.5X

Red spirit filled, mounted on wooden/plastic base plate Range-20°C to + 50°Cx 1°C, -20°Fto 120°Fx2°F.

Plastic/Glass vessel mounted on a base with terminals, platinum electrodes and two graduated test tubes and a holder.

Made of wood, for Internal and External measurements of objects upto 1 meter in size, figured every centimeter, calibrated in half centimeters, reading taken directly via the window in the adjustable caliper arm, length 1.1 meter (approx)

Nickel plated steel with dual scale 12 cm x 0.1 mm and 0- 5x0.05 inches, beveled cross horns for internal measurements, with adjustment thumb roller, locking screw and depth Gauge. Supplied in cardboard case.

Convenient Kit for illustrating Bernoulli's Law. The Venturi tube, which consists of a plain tube with a smooth constriction in its bore, at the middle is made of up glass and has three side tubes for attaching an included three leg manometer filled with colored water to show the relative pressures at significant points of the tube when gas is flowing through it.

This is a hand driven generator mounted on wooden base. Consist of two Aluminium spheres of dia 150 mm and 75 mm for charge collecting and discharging purpose, respectively. Both the spheres are removable. The discharge sphere is supported on pivoted arm. The large sphere surrounds the upper part of the charge generating belt assembly and charge accumulates on the sphere, when the hand wheel pulley is rotated. The charge generating belt is mounted on a insulated vertical pillar provided with metal brushes. A 4 mm socket is provided at the top of large sphere.

Oil Free Vacuum Pump, Exclusive oil-less construction of piston or diaphragm never requires lubrication, practically maintenance free, portable light weight die-cast aluminium components. Balanced eccentrics provide smooth, low vibration operation. Built in micro air filter, fitted with metal round plate.

ForSp. Gr. 0.700 to 2.000, all glass, with parallel graduated stem.

To verify the laws of triangle, parallelogram and polygon of forces. Heavy aluminium casted top disc, 40 cm diameter is accurately turned and graduated in degrees. It is provided with 4 frictionless adjustable pulleys having pivots of hardened steel, cords from central ring carries hangers for slotted weights. Pulley clamps have an index to show direction of forces. The base is of heavy cast iron with leveling screws and vertical rod is nicely polished supplied complete with 4 mass hangers and 12 masses (2 x 10 g, 2 x 20 g, 4 x 50 g, 4 x 100 gm).

Comprising a glass U tube 45 cm long mounted on wooden stand with scales fixed to each side of the stand.