Brass NP single barrel with stop cock air Inlet screw and a connection for rubber pressure tubing. These pumps may be used satisfactorily for performing all ordinary bell jar demonstration.

This air pump is suitable for many class room demonstration. Single barrel made from steel pipe fitted on wooden base. The Aluminium plate is provided with a stop cock air inlet screw and a connection for rubber pressure tubing.

For demonstrating that sound can not be transmitted in a Vacuum. It consists of a 2 liter bell jar and with a rubber stopper fitted with binding posts & connectors from which an electric bell is suspended. It operates on 3 to 6 volts using either battery or a transformer.

For demonstrating that sound can not be transmitted in a Vacuum. It consists of a 2 liter bell jar and with a rubber stopper fitted with binding posts & connectors from which an electric bell is suspended. It operates on 3 to 6 volts using either battery or a transformer.

To demonstrate pressure of the atmosphere two concave aluminium cups having dia either 62 mm or 75 mm are provided with handle & stop cock

For showing that pressure is transmitted equally in all directions. It consists of a hollow metal brass ball 5 cm in dia. Having small holes along one circumference and a branch tube with the piston when held with the holes in a horizontal plane and piston is pushed in, water will stream out the same distance from each hole.

A simple working model to demonstrate the principle of hydraulic press heavy pattern, aluminium fitted on sturdy metal base, working guaranteed good for demonstration.

To show that pressure of liquid depend upon their height of surface from bottom of the columns and not on capacity of vessel, with glass vessels of 4 different shapes mounted in metallic collars all metal parts of aluminium alloy.

All metallic same as above but seasoned wood board is replaced by heavy iron strip Approximately 42" x 3"