BELL IN VACUUM
Electric bell 6 V D.C. suspended in bell jar. Connections by two socket terminals fitted to a coiled wire which passes through a rubber bung which seals the mouth of bell jar.
Category: Physics & Electronic Laboratory Apparatus
Light alloy, with single hole to take rods up to 13 mm. diameter.
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.
QUICK LOCK CLAMPS
150 mm. long plated screw to hold up to four pair of single groove casted light alloy aluminium washers, fastened with metal washer and nickel plated wing nut.
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.