Comprising two metal discs, each 75 mm with variable separation, supported on insulating pillars and provided with insulating handles on the ends of the adjustment slide rods, 4 mm sockets too are drilled onto the ends of the rods. A rectangular glass plate is supplied which mounts in clips between the two discs & may be easily replaced by a plate of some other material to show the effect of different dielectrics. The whole is mounted on a polished wooden base. Overall dimensions: 225 x 150 x 175 mm.

Comprises a shallow glass dish100 x 10 mm & a pair of socket terminals/ electrode holders that clip onto its rim. A compliments of six electrodes is supplied, two point source, two line source & two circular rings of 70 & 35 mm diameter respectively.

For demonstrating the effect of electric discharge from points. The apparatus has 60 mm diameter six pointed star wheel with all the points curved in one direction. The wheel rotates freely on a pivot point mounted on a short stand & the stand is provided with a 4 mm connection socket on the round base.

A plated pillar mounted on bakelite base supporting two pith balls in unspun slik.