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Nickel plated burner tube of brass fitted with deep ceramic grid 22 mm. diameter to give a high and evenly distributed flame temperature. Painted metal base.
Same as above but fitted with gas control stopcock. 
To show that electrical charge resides on external surfaces of a conductor. Fabric net with cord on insulating pillar with metal base.
Carbon electrodes in rubber stoppers, fitted with terminals, per pair. 
A single speed hand driven machine consisting of a die casted parts and a steel pinion and worm drive. Screw clamps the machine to the bench. Finished in white colour, with removable crank handle. Suitable for 15 ml. glass tubes.
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