Description:

Optical glass lens, laboratory optical bench accessory
Science experiment - exploring optical property, Early physics science educational toy for kids children student
Student pupil teaching Aids，the fun of the lenses learning science knowledge
Kids science development toys, a series of physical science boarden kids and children , stimulating their curiosity
Material: Optical Glass, Plastic Frame

Size Chart:

Convex Lens Diameter: 40mm
Focal Length: 100mm
Handle length : 13.5cm/ 5.31 inch
Concave Lens Diameter: 30mm
Focal Length: -50mm
Handle length : 12.5cm/ 4.92 inch

Package Includes:

1Pcs Optical Glasses Len Toy 40mm
1Pcs Optical Glasses Len Toy 30mm

Note:

Please allow 1-3mm error due to manual measurement, make sure that you do not mind before you bid.
Due to the different monitor and light effect, the actual color may be slightly different from the picture color.