Ten Specimen Density Set (Ten Piece/Cube/Block)
- ... bulb holder. for low voltage DC to power. 2.5 Volts, 3 amps, 6 volts max.as it has exposed uninsulated contacts..
- ☛ 4, 【 Miniature bulb holder Good Choice 】------- The Miniature bulb holder is sturdy and well made. It works well in the hand of students. Miniature bulb holder provides stability in handling and visualization of electrical principles, screw type binding post, screw down..
- 5, 【 Warm Note】 ------ Of course that while this does teach them how electricity works, you have to make sure to teach them not to play with actual electrical equipment around the house..