2.0 Blueberry Bins with steam sign, cart can easily support hundreds of kids, Each cart includes a pallet of replacement supplies (over 15,000 components in total, and sturdy tools to create almost any project, sign is dry erase, NGSS Aligned, Grades K-12, working in groups of 2-3
Tube holder to support all S series (student) electron tubes for easy and safe operation. The five pin sockets for the tube are concealed inside the tube holder. A cathode protection switch is integrated into the tube holder, to protect the heated cathode from excessive voltage.