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
are drilled in the end of the adjustment rods.
A rectangular glass plate is supplied which mounts in clips
between the two discs and 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.