Easy instructional construction set for beginners from 8 years on. The cables are not soldered, solely screwed or twisted. The tests are described through figures and helpful descriptions. As current supply is been used a 4,5 V/DC flat battery (not included). Among others there are to be made following tests:

1. ordinary circuit with small lamp
2. electromagnetism
3. current proof through compass needle
4. radio transmitter system Marconi
5. generator
6. selfmade battery etc.
7. test of conductivity of water
8. LED test I
9. LED test II

Items included: compass with coil as current indicator, small lamp, electro-motor, lustre terminals, litz, detailed mounting instruction.