Professional F Light Source Junior Physics Optical Experiments Box Lens Principle Demonstration Teaching Equipment

 

Package included: 

1 pcs F light source

1 pc convex lens (focal length 5 cm) 

1 pcs concave lens(negative focal length 75mm)

1 pcs large bracket

3pcs slider

2 pcs stainless steel metal rails

1 pcs screen

 

Battery is not included.