Etereauty 2Pcs Durable Periscope Optical Experiment Periscope Practical Teaching Tools

Description This is a periscope made of high-quality materials and good craftsmanship and can be used for a long time. The detachable design makes this periscope convenient for us to use. It can be used not only as children s toys but also as props for optical experiments. In addition it is also an holiday gift for buying a child. Features - Color: Black. - Material: Plastic. - Size: About 29.50X5.00X4.20cm/11.59X1.97X1.65inch. - It is made of sturdy and environmentally friendly plastic materials and has a long service life. - This periscope has been treated with excellent craftsmanship and can be used safely by us. - A set contains two periscopes which are of good quality and low price. - The periscope with detachable and splicing design is convenient to carry and store. - It can be used for the education of optical experiments to let children learn more about science.