Bench mounted, high quality vacuum pump connected to an accurately machined pump plate. The arrangement is fitted with a needle valve to release vacuum and supplied with silicon rubber to use the pump bell jar without applying grease. They are available following in different sizes- 150 mm, 200 mm and 250 mm.

For demonstrating the conversion of electric energy into mechanical energy. Star-shaped copper disc rotatable vertically on pair of adjustable centres and dipping into mercury trough between the vertical limbs of a small horseshoe magnet on a wood base. Disc adjustable vertically on metal pillar which is connected to one of two terminals mounted on base. The other terminal is connected to the mercury trough. The apparatus will operates on 4 volts at which voltage it takes 1.8 amps, with out battery.

For demonstrating the transmissible of fluid pressure. The apparatus comprises two brass cylinder 19 and 38 mm diameters respectively, fitted with pistons and connected by brass tube. The pistons are provided with rods terminating in the circular platform each 75 mm diameter, for loading with the masses are required. The complete apparatus is mounted up in polished wooden base and the overall height with both pistons at the bottom of their cylinders is 245 mm.

The brass wheel is 7.5 cm at its rim, carefully balanced and all three pairs of pivots are adjustable. Complete fitted on stand.

A metal based board measuring 45 cm x 15 cm, hinged at one end supporting a scaled, planed board. The planed section can be inclined and fixed at any angle form 0-45 deg to the horizontal measured on the attached angel measure without weights.

A class demonstration kit for comparison of masses and to aid understanding of the terms ‘ mass’ and ‘weight’. A platform is supported on spring-steel strips which is made to oscillate ion the horizontal plane under various loads. Two aluminum trays 130 x 50 mm., held approximately 200 mm, apart on spring steel strips attached to their sides. One tray has holes to take three equal mass cylinders, approximately 100 x 25 mm, length x diameter. Three support pins to fit radial holes in cylinders.

Rain gauges offered by us are constructed from copper. It has a 5 inch (127 mm) funnel, an inner receiving vessel and an outer body made up of copper, and a glass measuring cylinder graduated 0 to 10 mm x 0.1 mm (100 divisions). We offer rain gauges in British Pattern.

Spherometers are used for accurate measurement of the radius of curvature of spherical lenses. Three-pronged brass table with three pointed legs carries a vertical main scale from 10-0-10 mm on one of the prongs, and a micrometer scale on a brass disc with 100 divisions. The table has a screw at its center with a pitch of 1 mm. Giving a least count of 0.1 mm.

For the experimental departmental relationship between a load applied to a wire and the resulting extension. The apparatus consists of an engraved brass scale 10 cm long and vernier reading 0.1 mm complete with tension weight but without load masses.

They comprise of a solid sphere with a small ring for suspension.

Diameters in mm
Brass	13	19	28
Copper	13	19	28
Iron	13	19	28
Lead	13	19	28
Aluminium	13	19	28

• Helical springs
• Slinky springs
• Set of springs
• Extension springs
• Compression springs etc.