Electricity
- Light bulb, 12v 5w$6.78
- Photoelectric Cell$95.00
- Photoelectric Relay$195.00
- Choke and Resonance Coil, 220V$640.00
- Choke and Resonance Coil$600.00
- Wind Powered Generator$381.10
- Voltaic Cell Kit.$26.51
- Electrode Stand with Trough.$14.96
- Porous Cup.$2.72
- Ring Thrower.$173.20
- Science First Induction Kit.$161.65