Standard design, comprising a cobalt steel magnetic needle 80 mm, mounted on bearings and moving in vertical plane over an engine divided vertical circular scale 0 - 90 - 0 - 90° x 1° on which both ends of the needle can be read. A spirit level is provided at the top. The whole is mounted to revolve about its vertical axis on a circular, horizontal scale graduated clockwise 0 - 360° x 1°. Base with levelling screws. Precision manufactured instrument.
Steel needle 10 cm long. In brass uprights, on base divided at every 45°, without arc.
With graduated arc, steel needle 10 cms long on graduated base.
933/ED ELECTROMAGNET`U' shape with hooked keeper and connecting screws; length a) 7.5 cms b) 10.0 cms c) 15 cms.
935/ED IRON
FILLINGSPacked in plastic bottle
937/LB MAGNETIC NEEDLESMade of best steel, length 6 cms, 7.5 cms and 10 cms.
939/LB MAGNETIC NEEDLE SUPPORTWith brass pillar and base. Also available in Plastic.
941/ED MAGNETISING AND DEMAGNETISING COILFor use on A.C. mains for both magnetising and demagnetising. This apparatus can be used on D.C.mains also with series resistance for magnetising only. D.C. Copper wire coil about 31 cm long is mounted on base board. Number of turns is marked. One switch, two fuses, small compass and soft iron rod are provided. Complete with plug and cord.
943/EL METAL STRIPSSet of metal strips for magnetism work.
945/ED SOLENOID GENERAL PURPOSEThree layers of insulated wire wound around 5 x 1" insulated tube. Complete with iron core and two binding posts.
Brass wires for suspension of magnets or for insulating strips. Length : 50 mm.
950/ED TANGENT GALVANOMETERA bakelite ring or bobbin is of 165 mm dia. With 3 windings of 2, 50 and 500 turns. The magnetometer is supported on a tube fitted on a ebonite plate which is free to revolve on the base of the instrument. The magnetometer and the ring can both be rotated independently of the base which is with levelling screws.