For investigating some of the factors influencing the capacitance of a condenser. Comprises two metal discs, each 100 mm. diameter with variable separation, supported on instulating pillars and provided with insulating handles on the ends of the adjustment slide rods. Two 4 mm. sockets in the end of adjustment rods for connection to electroscope and earth. Vertical sockets to carry a pair of suspended cork balls. Supplied with a square glass or acrylic plate 150 x 150 x 3 mm. which mounts in the vertical slot in the central support pillar between the two discs and may be easily replaced by plate of some other material to show the effect of different dielectrics. The whole is mounted on a polished wooden base. Overall dimensions 210 x 150 x 200 mm. high.
Category: Physics & Electronic Laboratory Apparatus
Cast iron with levelling screws, with vertical and horizontal holes to accept 13 mm. diameter rods, each hole with a clamping screw. Overall length 240 mm. mass approx. 2.5 Kg.
Light alloy, with single hole to take rods up to 13 mm. diameter.
Set of six perspex geometrical shapes, consisting of one each triangle, square, circle, rectangle, hexagon and octagon.
GEOMETRICAL INSTRUMENT BOX
Soft wood, contains one each of Divider, Protector, Set square 450 angle, Set square 600 angle, Compass, Rule, Board Cleaner. Each with a finger grip for convenient handling. Packed in a wooden box of size 400 x 240 x 75 mm. width x depth x height, fitted with brass fittings and a handle for carrying.