Dip Needle

Description

A kit of magnets and accessories in a storage tray.

Contents :

1. One Horseshoe magnet, 100 mm, with keepers.Two ceramic bar magnets, 75 mm long. 2. Three ceramic ring magnets, 38 mm diameter 3. Two plotting compasses clear both sides, 19 mm diameter 4. One lodestone specimen. 5. One pack Iron Filing. 6. One each strip of Iron, Aluminium, Zinc and Copper metal.

Description

For demonstrating that some metals are magnetic whilst others are not and for general ‘Metal Identification’ exercises. Comprises sixteen discs, 25 mm. diameter 2 each of Mild Steel, Stainless Steel, Brass, Zinc, Nickel, Silver, Bronze, Aluminium and copper. One of each is stamped with the name of metal. the other is unmarked.

Description

A former with terminals and engraved circle marked 0 – 180° – 0 figured every 45°, wound with 30 turns of insulated copper wire, complete with a magnetic needle 75 mm long and a pivot for the needle.

This demonstrates the action of electric current on a magnet. A cobalt steel needle with agate bearing supported by pivot is mounted on a plastic base and surrounded by rectangular frame fitted with terminals.