- plastic
- OPTICAL EXPERIMENT PERISCOPE--Detachable: The light weight and detachable design make it easy for us to carry, portable and practical for outdoor activity.
- OPTICAL EXPERIMENTAL PERISCOPE--Made of plastic material, and excellent, practical and durable, can be used for a long time.
- DIY PERISCOPE TOY--Made of good plastic materials, and excellent, practical and durable, can be used for long time.
- PROFESSIONAL PERISCOPE--It is made of high-grade materials and will not be easily damaged, durable and practical for long service life.
- PERISCOPE--Uses: Periscopes can be used in laboratories or physics classrooms to entertain and teach.
