ID:
437
Maker's Name:
H. W. Sullivan Ltd, London
Where made:
England
Dimensions:
23 × 23 × 18 cm
Condenser with semi-circular metal plates rotated by shaft in to and out of fixed stator plates. Capacity is proportional to the angle of the rotor shaft. The worm screw allows fine variation of capacity. The capacity is read off on a semi-circular scale thru a lens with cross-hair.
