16-Piece Wooden Geometric Shapes Set with Storage Case Subcategory_Electricity and Circuits Acrylic bell-in-vacuum jar with an

Acrylic bell-in-vacuum jar with an internal 4-6V DC electric bell that fades and falls silent as the enclosed air is removed

the standard configuration for keeping the field intact between classroom magnetism sessions

5m of twin flex for connection to mains-grade optical-bench setups

sized at 10 inches for focused respiratory anatomy teaching

adjustable via motor voltage to mimic temperature and float weight to mimic pressure

16-Piece Wooden Geometric Shapes Set with Storage Case Subcategory_Electricity and Circuits Acrylic bell-in-vacuum jar with anHardwood geometric shapes in a 16 piece set, housed in a 5. 875 by 3. 875 inch wooden storage box for tactile spatial reasoning drills and solid geometry exploration.