4mm Connecting Lead, Model B Base_Octagonal the optical-grade body delivering cleaner

the optical-grade body delivering cleaner refraction angles than acrylic peers for precision Snell's law work

75 inch acrylic frame with 4mm sockets

and mechanical-advantage experiments (stand base and support clamp sold separately)

Teaches proper brushing technique through a 3x life-size jaw model with gums and oversized toothbrush

and assorted metal samples for structured lessons

4mm Connecting Lead, Model B Base_Octagonal the optical-grade body delivering cleanerUsed as a basic 4mm plug to plug patch wire, this insulated lead provides reliable bench circuit connections between instruments, components, and student built apparatus.