7
Electric motors, gears and vibration generators; all being for laboratory uses and/or teaching and education purposes both individually and in combination
9
Electrical and electronic power supply apparatus; battery holders; battery chargers; meters and gauges; oscilloscopes; data-logging apparatus and instruments; computer programmes and computer software; computer interface apparatus and instruments; sensors; materials testing apparatus and instruments; biological amplifiers; microscopes; fuel cells; radio receivers; amplifiers; calorimeter blocks; motion measuring apparatus and instruments; light gates; timers; stop clocks; linear airtracks; apparatus and instruments for investigating linear and rotational mechanics; loud speakers and oscillators; ultrasonic testing apparatus; light boxes; optical apparatus and instruments; magnifiers and mirrors; blocks and prisms; lenses and filters; diffraction slides; ripple tanks; stroboscopes; microwave transmitters and receivers; resistors and potentiometers; capacitors; switches; plugs and sockets; electro-static measuring apparatus and instruments; magnets; transformers; transducers; electronic circuits; rectifiers; thyratrons; geigertellers; geigercounters; diodes; triodes; transistors; semi-conductors; all being for laboratory uses and/or teaching and education purposes, both individually and in combination
11
Heater blocks and solar cells; all being for laboratory uses and/or teaching and education purposes both individually and in combination
16
Printed publications and printed matter; books and manuals; worksheets; teaching materials
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