For measuring the pressure of gases. Suitable for moderate pressures. Consists of a borosilicate glass U-tube, diameter 25mm and 50cm high, open at both ends. Has one riffled arm for easy connection to rubber tubing. Mounted on a wooden board, fixed on a wooden stand. A metric scale is fitted between the arms of the tube. It is recommended to use colored water for greater visibility in a lecture hall.

For the dramatic and puzzling visualisation of the effect of change of centre of gravity of an object. Consists of a pair of wooden double ended cones, a wooden diverging bar 0 to 10cm wide, serving as an inclined plane. When the double cone is set on the bars of the inclined plane the cone appears to roll up the plane violating the law of gravity. This is possible because the axis of the cone is actually moving downward due to a widening of the track.

Made of high quality Aluminuim alloy and Stainless steel. Convenient direct beam graduation. Capacity: 311 grams Readability: 0.01 grams Beam: 200 x 100g 100 x 10g 10 x 1.0g 1 x 0.01g Platform (Dia.) 9.1cm

For determining the mechanical advantage and demonstrating the principle of conservation of energy. Consists of four-step wooden wheel of 35, 50, 65 and 105mm diameters fitted with ball bearings, turning on a single, plated steel rod which can be clamped to a support stand using a right angle clamp. Each wheel has a flat groove to accept several turns of a cord with a small hole at each groove for holding a knotted cord. Can be fitted to a support stand with a right-angle clamp (not included). Recommended for use with nylon twine.

For demonstrating the effect of temperature on the density of a liquid. Consists of a copper ball about 75mm diameter, properly loaded so that its density in less than that of water and it floats. When the water is heated its density reduces and the ball sinks.

To show that water has a maximum density at 4 degrees C. Consists of a sheet metal cylinder, with two tubes in the upper and lower regions for inserting thermometers through rubber stoppers. Mounted on a base and encircled midway by an outer trough for holding a mixture of ice and salt. Temperature of the water is measured at the top and bottom of the inner cylindrical vessel over a period as the water cools. Supplied without the thermometer.

For verifying the laws of vibrating strings, frequency comparisons with vibrating bodies, and determination of the frequency of a tuning fork by tuning a string in unison with it. Consists of a hollow wooden resonance chamber measuring (l x w x h), 115 x 12 x 8cm, with two meter scales graduated in millimeters. One end of a brass and a steel wires is fixed on the edge of the resonance chamber and the other end of the wires are pegged with a tensioning key. Pulley and hook provided for the third steel wire to be tensioned by masses. Two movable bridges are also provided. Weights not included.

These plastic pulleys have deep V-groves and are mounted on a metal frame with two end hooks.

For demonstrating Bernoullis principle that any restriction in fluid flow results in increased speed and decreased pressure. Comprised of borosilicate glass tube 18cm (7in) long and 18mm ( 3/4in) in diameter with a constriction in the centre and three vertical openings in different sections. Includes three glass manometer tubes and rubber connecting tubes for measuring pressure at three locations. Ends are flared. Note: Venturi tubes of other dimensions and specific wall thickness can be supplied.

For demonstration of Hookes Law and use with Hookes Law Apparatus. Closely wound springs of diameter 6mm with loops at both ends. Made of 26SWG wire. Average extension for a 250g load are indicated below. Springs with specific enlongations can also be supplied.

For clamping on bench tops or boards. Aluminum pulley, diameter 50mm with V-groove, is mounted on a frictionless cone bearing and fitted on a frame with clamp for fixing to any surface upto 25mm thick with a thumbscrew. Enamelled finish.

Made from hexagonal steel rod by carefully machine turning to a sharpened point. Dimensions are approx. (l x d), 85 x 20mm (3 1/3 x 25/32in) and weight approx. 140g (5oz). Provided with a screwed end cap with a hole to receive a cord.

For proving Hookes Law of Elasticity, i.e. that elongation of an object is directly proportional to the load applied and demonstrating the phenomenon of simple harmonic motion of a vibrating weight, potential energy etc. Consists of an adjustable mirrored scale 15cm long, graduated in millimeters, mounted on a support rod 30cm long fitted on a base. A hook attached to the rod supports a spring and indicator. Provided with a 50g brass hanger. Required slotted weights can be ordered separately.

For demonstrating that heavy or light objects fall at the same rate in a vacuum. Made of a transparent tube (d x h), 100cm x 37mm, with rubber end caps, one of which has a nozzle and stopcock for connecting to a vacuum pump (not included). Provided with a simulated coin and a feather.

For simple wave studies. Edge wound spring.

These plastic pulleys have deep V-groves and are mounted on a metal frame with two end hooks.

For studying the dependence of moment of inertia on the distribution of mass, by rolling down a metal ring and wooden disk of the same mass and diameter on an inclined plane or rolling them on a level surface with the same initial impulse. Comprised of a metal ring and a wooden disk of diameter 15cm, thickness 5cm and same mass. When these are rolled down on an inclined plane on a level surface with the same initial impulse, the difference in acceleration can be studied.

For introducing the concept that friction depends on the nature and smoothness of materials. The kit consists of three wooden blocks about (l x w), 100 x 75mm, one with a mirror surface on one side, the second with a sandpaper surface and the third with a plane surface. There is a hook on one end in each of the three blocks. Includes a mirror about (l x w), 355 x 75mm.

Set of six cylinders of aluminum, brass, copper, iron, lead and zinc. Packed in a cardboard box.

For determining the volume of an irregularly shaped body when used in conjunction with a catch bucket. Suitable for density cylinders, sinkers and Archimedes principle devices. Made of galvanised steel sheet. The spout is properly angled to accurately measure displaced liquid. Hammer tone finished.

A multiple-use manometer for accurate measurement of gas pressure. Consists of a borosilicate glass manometer tube with a 50cm arm with funnel top and a 26cm arm with riffle for easy connection to rubber tubing. Mounted on a wooden board fixed over a wooden stand.

Consists of spring-loaded metal device and two steel balls. Demonstrates that a ball released vertically will hit the floor at the same speed of a ball released horizontally.

These plastic pulleys have deep V-groves and are mounted on a metal frame with two end hooks.

The general purpose weight includes nine weights supplied in a wooden block. This set includes one each of 10g, 50g, 100g, two each of 20g, and 200g, (all made of plated brass) and one each of 500g and 1000g (both made of cast iron, enamel finish). Each weight has a hook for easing applications. This set is perfect for general science and physics laboratory work.

These plastic pulleys have deep V-groves and are mounted on a metal frame with two end hooks.

The Dual Letter Balance features a single pan balance with a three point base and a leveling screw. This balance has a dual scale of 0-250g with 1g intervals and 0-1 kg with 10 g intervals. The scale range can be changed by lowering or raising the mass on the pointer arm.

These plastic pulleys have deep V-groves and are mounted on a metal frame with two end hooks.

Consists of 300ml aluminum catch bucket, aluminum overflow can with angled spout and three hooked cubes of different metals. For use in finding the volume, density and specific gravity of an object.

For measuring inertial masses and qualitatively understanding the terms, mass and weight. This principle can be used to determine mass under weightless conditions in space flights. The apparatus consist of two aluminum trays joined together by a pair of spring steel strips attached to their sides. Trays are about 200mm apart. One of the trays (the oscillating tray) is drilled to hold three equal cylindrical masses and the other tray acting as an anchorage is clamped by a C-clamp to a bench. Supplied with three masses and a cord (does not include a C-clamp).