Two glass tubes 220 mm long, one with closed top & the other open and connected by 1 metre pressure rubber tubing, are mounted on two brackets sliding on two vertical metal rods fixed rigidly on a stand. The stand has a graduated scale 0 to 100 cm. Supplied without mercury.

Metal frame with six glass tubes of different bores,each of 150 mm length, fitted with corks, to show different heights of water column in different bore tubes.

Mains operated electronic timer reads 0 to 99.99 seconds. The display comprises of four 7 segment digits to read seconds and centiseconds. Two pairs of colour coded 4 mm sockets with two push buttons are controlled with a mode switch which enables either make or break pulse to be used to operate the timer. With re-set action.

Stainless steel rod 1200 mm long, l0 mm diam. with one pair each of small & large, light & heavy masses, two steel knife edges in adjustable holders & a metal bracket support drilled for wall mounting.

A Brass

B Copper

C Aluminium

D Iron

E Lead

F Wood

Metal, Painted, wih spout

Hardwood, 300 mm long, metal reinforced ends, three low friction ball bearing wheels, quick release triple impulse spring, 4 removable metal legs to enable stacking of trolleys, mass 0.9 kg approx.

Containing 25 expendable steel springs, 2 wide steel springs, 114 x 75 mm diam, 2 soft latex foam blocks, reels of copper wire, one of 32 swg & two of 26 swg, each 50 g, 1 length valve latex tube, 4 elastic cords with eyelets and 4 soft erasers for twisting.

For parallelogram and polygon of forces. A strong drawing board 750 x 600 mm, fitted with brackets for fixing to a wall. Clear space is left all round the edges for attachment of pulleys etc., supplied with pulleys, cords but without masses.

Glass working model with visible valves, fitted on wooden stand, complete with water reservoir.

For verifying laws of composition and resolution of forces, comprising a machined aluminium table 40 cm diam., scale graduated 360°, on heavy vertical support rod and tripod base. Complete with one ring, 4 sliding clamp pulleys. Supplied with four cords with rings at one end, without masses.

Consists of two units, each mounted on a plastic base which can be clamped to a 12 mm diam. retort stand rod. The solenoid unit ensures prompt release of a metal sphere on de-energising. The gate switch unit comprises a hinged steel plate held against an adjustable contact by a small magnet so that by proper adjustment, the plate falls promptly as soon as the falling sphere falls on it. Complete with stand.

A three limbed glass tube is mounted on a wooden stand with a scale for each of the two 600 mm tubes. A rubber tube with Hoffman clip is provided for the short limb. Two metal sliding distance rods may be so adjusted that their lower ends just touch the surface of the liquid under experiment to facilitate column height readings. Overall dimensions 680 x 300 x 150 mm approx.

Consists of a 12 cm long mirror scale, a spring with provision to hang masses. Supplied without masses.

Heavy, two cylinders of 40 mm & 15 mm diam. with pistons fitted with non-return valves, worked by a hand lever,a stopcock at bottom of the smaller cylinder, removable loading platform, strong construction.

For determining specific gravity by Archimedes principle.With one pair of long frames and one short frame with a hook underneath for specific gravity experiments.With three pans,adjustable stand and scale. Mounted on a wooden base.

A 600 x 75 mm plane hinged to base at one end carries a pulley at the other. A movable block enables variation of inclination of plane, a friction slide 100 x 65 mm which is reversible and has one side cut away for half of its area. Complete with metal roller 75 x 25 mm diam., with pan but without masses.

Two dimensional. Four metal trays with cork lined bottoms and vertical sides 300 x 200 x 19 mm.With 100 small coloured glass marbles and 8 large marbles of 25 mm diam.

To illustrate principles of lever and moment. Five plywood beams 600 x 44 x 3 mm with ruled graduations at every 38 mm and a shallow groove across its centre for fulcrum point, with 4 wood fulcrums and forty 25 mm square metal blanks.

Glass working model with visible valves, fitted on wooden stand, complete with water reservoir.

Square section aluminium alloy track,length 1.5 m, with staggered holes, supported on two light alloy castings. One support has a two point contact and other a one point contact for lateral and horizontal adjustments by means of a knurled screw. Identical end caps enable air to be introduced from either end of the track keeping the other end closed.

Linear Air Track Accessories Kit

Four glass tubes of different shapes & cross sectional areas are connected to a common horizontal tube.

Diam 75 mm approx. with stopcock and handles.

For ticker tape timer No. PHY6142, input 220-240 V, output 12 V a.c. 1 amp.